Question

Help me to find this
tomorrow is my exam
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Answer 1

Answer:

I think 4asqare-4ab.

Try this

Answer 2

Answer:

2b² - 8ab

Given

P = 9ab + 8a²

Q = 4a² - 4ab

R = 7b² - 2ab

S = ?

Perimeter

P+ Q + R +S = 9b² - 2ab + 12a²

Now put the given value

9ab + 8a² + 4a² - 4ab + 7b² - 2ab + S = 9b² - 2ab + 12a²

9ab - 4ab - 2ab + 8a² + 4a² + 7b² + S = 9b² - 2ab + 12a²

6ab + 12a² + 7b² + S = 9b² - 2ab + 12a²

S = 9b² - 7b² - 2ab - 6ab + 12a² - 12a²

S= 2b² - 8ab

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