Question

g(x) = 5x2 - 4x
h(x) = -4x2 - 6x
Find: (g - h)(3)

How do I solve it with 2 different equations like this? I'm not asking for the answer, just need to know how to solve this one.

Answer 1

step one find g(3) and h(3)
step 2 (g-h)(3) = g(3) -h(3)
Note to find g(3) replace x by 3 in equation g(x)

Answer 2

So, would I put 3 where the x's are ?

Answer 3

Then add the two equations together?

Answer 4

in the g(x)
g(x)=5(3)^2-4(3)

Answer 5

g(3)=5(3)^2-4(3)

Answer 6

g(3)=45-12=33

Answer 7

Okay, I got it. So, you get the answer for those two, then subtract the two answers.

Answer 8

yes

Answer 9

Thank you . I did all of this last year, but I took homeschooling at the beginning of this year, and forgot how to do it all. But, thank you so much!

Answer 10

welcome