solve by factorization. 4n^2 + 5n - 636=0
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4n^2 + 5n - 636 = 0
Product = 4 × -636 = -2544
Sum = 5
So numbers are 53 and -48
4n^2 - 48n + 53n - 636 = 0
4n( n - 12 ) + 53 ( n - 12 ) = 0
(4n + 53 ) ( n - 12 ) = 0
n = -53/4 or 12
Product = 4 × -636 = -2544
Sum = 5
So numbers are 53 and -48
4n^2 - 48n + 53n - 636 = 0
4n( n - 12 ) + 53 ( n - 12 ) = 0
(4n + 53 ) ( n - 12 ) = 0
n = -53/4 or 12
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