plug in the equation=7x² + 2x - 5
then take it step by step=
7x² + 7x - 5x - 5
7x (x + 1) - 5(x + 1)
(x + 1)(7x - 5)
5q^4 - 28q² - 12
5q^4 - 30q² + 2q² - 12
5q² (q² - 6) + 2(q² - 6)
(q² - 6)(5q² + 2)
2x² - x - 10
2x² + 4x - 5x - 10
2x (x + 2) - 5(x + 2)
(x + 2)(2x - 5)
-36x² - 3x + 60
-3 (12x² + x - 20)
-3 (12x² + 16x - 15x - 20)
-3 [4x(3x + 4) - 5(3x + 4)]
-3 (3x + 4) (4x - 5)