Solve 9z = 10z² by factoring?

Answer 1

Favorite Answer

9z - 10z^2 = 0

z(9 - 10z) = 0

z = 0 or 9 - 10x = 0

..................9 = 10z

..................9/10 = z

Answer 2

10z^2 - 9z = 0

z(10z - 9) = 0

either z = 0 or 10z = 9

either z = 0 or z = 9/10