Answer:
ab(b-3)
ab-3b+b^2-3a
(-3a+ab)(-3b+b^2)
a(b-3) b(b-3)
You shouldn't blame your mom. You are more than capable of getting 80's that is the bare minimum. Your mom does not want you to fail, try harder and get better grades. 70's are not the best
2y + 4 + x = 90
2y + 4 + 3y + x = 180
5y + x + 4 = 180
x = 176 - 5y
2y + 4 + (176 - 5y) = 90
-3y + 180 = 90
-3y = -90
y = 30
x = 176 - 5(30)
x = 26 degrees
Hope this helps! :)
