Question

Given f(x) = 2x² + 8x - 4 and g(x) = 5x +6, find 3f(x) – 2g(x).

Answer 1

Explanation:

When the problem says 3f(x), it means that you are multiplying f(x) by 3. The same goes for 2g(x).

`3(2x^2+8x-4)= 6x^2+24x-12`

`2(5x+6) = 10x+12`

Now, we subtract f(x) from g(x) after being multiplied.

`(6x^2+24x-12)-(10x+12)`

`6x^2+14x-24`