3
2 squared plus 2 x 3 = 10, 7 squared plus 7 x 2 = 63, 6 squared plus 6 x 5 = 66,8 squared plus 8 x 4 = 96 so 9 squared plus 9 x 7 = 81 + 63 = 144.
6 squared is 36. 36 plus 3 is 39
(5x + 2)(x + 3)
(x + 3)(x + 2)
It is 36/6 +4 = 10
2(x + 3)(x + 1)
(x + 3)(x - 2)
(x + 3)(x + 2)
2x2 + 7x + 6 = 2x2 + 4x + 3x + 6 = 2x(x + 2) + 3(x + 2) = (x + 2)(2x + 3)
6x^2 -13x+6 = (3x-2)(2x-3) when factorized
5x squared plus 33x plus 18 = (5x + 3)(x + 6) x = -6, -3/5