Question

How do you simplify `8(5+x) -3x(x-3)`?

Answer 1

`=-3x^2+17x+40`

Explanation:

To simplify it (and therefore solve it), you'll need to know the distributive property, which is `a(b+c)=ab+ac` If you want further explanation of this, please say so

Applying that to the original equation:
`8(5+x)-3x(x-3)=8(5)+8(x)-3x(x)-3x(-3)`
`=40+8x-3x^2+9x`
`=-3x^2+17x+40`