3 years ago

Find g(f(x)) when f(x) = 3x2 + x - 8, and g(x) = 4x + 5.

1 answer:

4 0

Answer: 12x^3 + 19x^2 -27x -40

Step-by-step explanation:

Finding f(x) times g(x) is multiply the two polynomials

(4x+5)(3x^2 + 1x -8) Apply the distributive property twice to solve

4x ( 3x^2 + 1x -8)

12x^3 + 4x^2 - 32x

5(3x^2 + 1x -8)

15x^2 + 5x - 40

12x^3 + 4x^2 - 32x + 15x^2 + 5x -40 now combine like terms

12x^3 + 19x^2 -27x -40

You might be interested in

Lana71 [14]

Answer:

if you are dying you should call EMS

Step-by-step explanation:

7 0

3 years ago

Alex

6in x 110 = 660in = 55ft

8 0

3 years ago

Dima020 [189]

Minus the 21 from the other side of the equation making it 7x=-21 then u divide the 7 from the x to the -21 resulting in x=-3

5 0

3 years ago

Lesechka [4]

she practice 270 minutes

7 0

3 years ago

myrzilka [38]

Umm.. I have to see the problems, we might not have the same textbooks so

8 0

3 years ago