12.04.2022

Evaluate the following expression, when x=-2 2x^2+4x-3

A) 3
B) 3
C) -19
D) 9

. 0

Step-by-step answer

24.06.2023, solved by verified expert
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Evaluate the following expression, when x=-2, №17886712, 12.04.2022 04:00

Step-by-step explanation:

To find the value of this equation when Evaluate the following expression, when x=-2, №17886712, 12.04.2022 04:00, we can substitute this value inside the equation and use PEMDAS to successfully find the value.

With the expression of Evaluate the following expression, when x=-2, №17886712, 12.04.2022 04:00, let's substitute -2 in as x.

Evaluate the following expression, when x=-2, №17886712, 12.04.2022 04:00

Now let's follow PEMDAS to solve this equation.

PEMDAS states that when solving an expression/equation, the order we must follow is

ParenthesesExponentsMultiplication/DivisionAddition/Subtraction

We can now solve for this.

We see that exponents come before multiply and dividing. Therefore:

Evaluate the following expression, when x=-2, №17886712, 12.04.2022 04:00

So the value of our first term is 8.

Our second term will be Evaluate the following expression, when x=-2, №17886712, 12.04.2022 04:00, and our last term will remain -3.

Adding these values together:

Evaluate the following expression, when x=-2, №17886712, 12.04.2022 04:00

Therefore, the value of this expression when x = -2 is -3.

Hope this helped!

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9 students found this answer . helpful

A) -3

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Step-by-step explanation:

Step 1: Define

2x² + 4x - 3

x = -2

Step 2: Evaluate

Substitute in x:                                                                                                2(-2)² + 4(-2) - 3Exponents:                                                                                                      2(4) + 4(-2) - 3Multiply:                                                                                                           8 - 8 - 3Subtract:                                                                                                          -3
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Faq

Mathematics
Step-by-step answer
P Answered by PhD

\huge\boxed{\text{A) -3}}

Step-by-step explanation:

To find the value of this equation when x=-2, we can substitute this value inside the equation and use PEMDAS to successfully find the value.

With the expression of 2x^2+4x-3, let's substitute -2 in as x.

2(-2)^2 + 4(-2) - 3

Now let's follow PEMDAS to solve this equation.

PEMDAS states that when solving an expression/equation, the order we must follow is

ParenthesesExponentsMultiplication/DivisionAddition/Subtraction

We can now solve for this.

We see that exponents come before multiply and dividing. Therefore:

2(-2)^2 = 2 \cdot (-2)^2 = 2 \cdot 4 = 8

So the value of our first term is 8.

Our second term will be 4 \cdot -2 = -8, and our last term will remain -3.

Adding these values together:

8 - 8 - 3 = -3

Therefore, the value of this expression when x = -2 is -3.

Hope this helped!

Mathematics
Step-by-step answer
P Answered by Master

A.-3 Sana makatulog po Ito sa inyo


Evaluate the following expression, when x=-22x^2+4x-3A) 3B) 3C) -19D) 9​
Evaluate the following expression, when x=-22x^2+4x-3A) 3B) 3C) -19D) 9​
Mathematics
Step-by-step answer
P Answered by PhD

SI=(P*R*T)/100

P=2000

R=1.5

T=6

SI=(2000*1.5*6)/100

=(2000*9)/100

=180

Neil will earn interest of 180

Mathematics
Step-by-step answer
P Answered by PhD
Answer: 440 grams for 1.54 is the better value
Explanation:
Take the price and divide by the number of grams
1.54 / 440 =0.0035 per gram
1.26 / 340 =0.003705882 per gram
0.0035 per gram < 0.003705882 per gram
Mathematics
Step-by-step answer
P Answered by PhD

The solution is in the following image

The solution is in the following image
Mathematics
Step-by-step answer
P Answered by PhD

The answer is in the image 

The answer is in the image 
Mathematics
Step-by-step answer
P Answered by PhD

The wood before starting =12 feet

Left wood=6 feet

Wood used till now=12-6=6 feet

Picture frame built till now= 6/(3/4)

=8 pieces

Therefore, till now 8 pieces have been made.

Mathematics
Step-by-step answer
P Answered by PhD

Salesperson will make 6% of 1800

=(6/100)*1800

=108

Salesperson will make $108 in $1800 sales

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