Let f(x)= 2x2−3x+8 What is the value of f(-4)?

52

Step-by-step explanation:

So we have the function:

And we want to find f(-4).

To find f(-4), substitute -4 for x. Thus:

Square:

Multiply:

Add:

Add:

And we're done!

Our answer is 52.

f(-4)=52

Step-by-step explanation:

We are given the function:

We want to find f(-4), so we must substitute -4 in for x.

Solve according to PEMDAS: Parentheses, Exponents, Multiplication, Division, Addition and Subtraction.

Evaluate the exponent first.

⇒ (-4)²= -4*-4 = 16

Multiply 2 and 16.

⇒ 2*16=32

Multiply -3 and -4.

⇒-3*-4=12

Add the three numbers together.

f(-4) for the function f(x)=2x²-3x+8 is equal to 52

answer 1 : option "c"

answer 2 : option "d"

answer 3 : option "b"

answer 4 : option "d"

answer 5 : option "b"

answer 6 : option "a"

answer 7 : option "c"

answer 8 : option "d"

answer 9 : option "c"

answer 10 : option "d"

answer 11 : option "c"

answer 12 option "b"

answer 13 option "c"

answer 14 option "c"

answer 15 option "d"

answer 16 option "a"

answer 17 option "b"

answer 18 option "c"

answer 19 option "a"

answer 20 option "a"

answer 21 option "c"

d