Find z(5z2 – 80) + 5z(z + 4).
(z - 4)
Find and correct the errors in the following mathematical statement:
4(x - 5) = 4x - 5
Find and correct the errors in the following mathematical statement:
x(3x + 2) = 3x2 + 2
Find and correct the errors in the following mathematical statement:
5y + 2y + y - 7y = 0