Question

If f(x)=−3x2−2x+1, find 2[f(r)]

Please use your BIG BRAIN SKILLS this is the last question on my test please help..... :{

Answer 1

Answer:

$-6x^2r-4xr+2r$

Step-by-step explanation:

$f(x)=-3x^2-2x+1\\\\2[f(r)]$

Plug in the value of f of x into the second expression:

$2[(-3x^2-2x+1)(r)]$

Use the distributive property to distribute the two:

$2(-3x^2)+2(-2x)+2(1)[r]\\\\-6x^2-4x+2[r]$

Distribute each value among r:

$-6x^2r-4xr+2r$

:Done