Question

solving equations using the zero property and the problem is z^2 - 10z = -21 (what do I do)

Answer 1

Set equal to 0 and factor.

Answer 2

z^2-10z+21=0
(z-7)(z-3)=0
So
z-7=0 or z-3=0
z=7 or z=3

Answer 3

thank you I did it right then!!!

Answer 4

how do you do y^2 - 28 = 0 using the square root property of equality