Math, asked by noormohammad451, 6 months ago

7. What should be added to 7a2 + ab - 9b2 to get 9a? -7ab + 15b2 ?

Answers

Answered by shyamalarokkam

6

Answer:

4ab should be added

Step-by-step explanation:

when 4ab is added , it becomes 9a^2+6ab+b^2=(3a+b)^2

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