Question

Okay so i need to find the answer, it tells me if it's correct or not. it keeps telling me I'm incorrect on the first one, can someone find the actual answer and tell me what am I doing wrong?

this is how i personally solved it

(-4x+4(3x^2-4x))
-20(-1)+12(-1)^2
32

then i tried it this way

4(-1)(3(-1)-5)
it was also 32

please help, kindly appreciated ​

Answer 1

`\begin{cases} g(x)=3x^2-4x\\\\ f(x)=-4x+4 \end{cases} \\\\[-0.35em] ~\dotfill\\\\ g(-1)=3(-1)^2 -4(-1)\implies g(-1)=3+4\implies g(-1)=7 \\\\[-0.35em] ~\dotfill\\\\ \underline{(f\circ g)(-1)}\implies f( ~~ g(-1) ~~ )\implies f(7)=-4(7)+4\implies \underline{f(-7)}=28`