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

1 Answer
Apr 20, 2016

Answer:

#=-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#