Question

9) What is the sum and difference of the given functions?

f(x) = 3x2 + 2x
g(x)=-x?+ 4x
wer
tions
f + g = ?
f-g=?
Split
creen
A. $ +g =2x² + 6x
f-g=4x2 – 2x
B. f + g = 2x+6
s-g=4x2 - 2x
C. $+ g = 2x2 + 6
s-g= 4x-2
Split
Screen
A) Choice A
B) Choice B
C) Choice C
Unit
Save

Answer 1

A

Explanation:

if f(x)=3x^2+2x g(x)=‒x^2+4x

f+g=(3x^2+2x)+(‒x^2+4x)

=3x^2‒x^2+4x+2x

=2x^2+6x

f‒g=(3x^2+2x)‒(‒x^2+4x)

=3x^2+2x+x^2‒4x

=3x^2+x^2+2x‒4x

=4x^2‒2x

i hope my answer will be clear to you