Answer:
-3
Step-by-step explanation:
(x+3)(x-1) - x(x+2)
Foil the first term
First x^2
outer -x
inner 3x
last -3
Add them together
x^2 -x+3x-3 = x^2 +2x-3
x^2 +2x-3 - x(x+2)
Distribute the second term
x^2 +2x-3 -x^2 -2x
Combine like terms
-3
The solution is m=40. you just needed to divide 7 by 56, then you get 8. after that you multiply 8 by 5.
The equation doesn't make any sense
30x + 42 = 6(5x + 7) you can understand it now
Coordinate plane A is your answer