Answer:
x = -8 and x = 8
Step-by-step explanation:
x^2 - 64 = 0 Our first step is to factor
(x + 8)(x - 8) = 0 Now use zero product property to help solve for x
x + 8 = 0 x - 8 = 0
x = -8 x = 8
Hope this helps!
$300 - $140 = $160
Now we do $160 divided by $40
That means she bought 4 dresses for $40 dollars each
1(4x+7y)+2(5y-9x)
=4x+7y+10y-18x
=-14x+17y
The solution is -14x+17y.
I think its 8 because 64 divided by 8 is 8.