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in Factorization by (30.8k points)
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Factorize: 

y2 + 7y – 144

1 Answer

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Best answer

y2 + 7y – 144 

Now, first we have to find out the numbers whose

Sum = 7 and 

Product = - 144 

The numbers are 16 and - 9, 

So, 

y2 + 7y – 144 

= y2 + 16y – 9y – 144 

= y(y + 16) – 9(y + 16) 

= (y + 16)(y – 9)

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