Question

9r (z +1)+ 3r (z+1)
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Answer 1

Answer:

9r (z +1)+ 3r (z+1)

9rz + 9r + 3rz + 3r

12rz + 12r

12r( z + 1 )

Step-by-step explanation:

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Answer 2

9r(z+1)+3r(z×1)

=9rz+9r+3rz+3r

=12rz + 12r

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