Question

solve by factorization. 4n^2 + 5n - 636=0

Answer 1

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