Question

(z+3)(z-3)-z(z+5)=6​

Answer 1

(z+3)(z−3)−z(z+5)=6

(z)(z)+(z)(−3)+(3)(z)+(3)(−3)+−z2+−5z=6(Distribute)

z2+−3z+3z+−9+−z2+−5z=6

(z2+−z2)+(−3z+3z+−5z)+(−9)=6(Combine Like Terms)

−5z+−9=6

−5z−9=6

Step 2: Add 9 to both sides.

−5z−9+9=6+9

−5z=15

Step 3: Divide both sides by -5.

−5z

−5

=

15

−5

z=−3

Answer:

z=−3

Answer 2

hope it helps...

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