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Question

y^2 + 5y - 84

How do you simplify this question i don't need the answer 

Answer 1

y² + 5y - 84

 

Since the coefficient of the square term is 1,

look at the constant.. -84.

We need factors of -84 that add to 5.

12(-7) = -84 and 12-7 = 5

 

y² + 5y - 84 = (y+12)(y-7)