Question

$(z + 3)(z - 3) - z(z + 5) = 6$
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Answer 1

Answer:

(z + 3)(z - 3) - z(z + 5) = 6

z(z-3) +3(z-3) -z² -5z = 6

z² -3z +3z -9 -z² -5z = 6

-5z -9 = 6

-5z = 6+9

-5z = 15

z = 15/-5

z = -3

Answer 2

Answer:

hope this helps you step by step explaining