Answer:
it looks good!
Step-by-step explanation:
Answer:8
Step-by-step explanation:
X+56=x^2
X^2-x-56=0
X^2-8x+7x-56=0
X(x-8)+7(x-8)=0
(X+7)(x-8)=0
X+7=0 or x-8=0
X=-7 or x=8
20.022 b/c you have to round the 1 to a 2 b/c of the 5 behind the 1.
Hope that makes sense . (: