Question

5x sq - 7x +2 find tthe sum of their reciprocal

Answer 1

5x ^ 2 - 7x +2
5x ^ 2 - (5+2)x + 2
5x^2 - 5x - 2x + 2
5x(x-1) -2(x-1)
(x-1) (5x-2)


so the sum the reciprocal will be 5+2