How do you simplify y = 4(x + 5) - 2(x + 1)(x + 1)?
1 Answer
Jul 16, 2016
=18-2x^2
Explanation:
We can start off by multiplying the
=4x+20 - 2(x+1)^(2)
Remembering that
=4x+20 - 2(x^2+2x+1)
The tricky part here is that we have a negative out on front of the
=cancel(4x)+20 - 2x^2cancel(-4x)-2
=20 - 2x^2-2
=18- 2x^2
Or the equivalent:
=2(9-x^2)
=2(3-x)(3+x)