x2 + 2x - 15 = x2 - 3x + 5x - 15 = x(x - 3) + 5(x - 3) = (x + 5)(x - 3)
X2 + 4xx(x + 4)=======
1
x2 + 6x = x*(x + 6)
p2-5p-50= (p-10) (p+5)
x2 + 5x - 120 can not be factored.
x2 + 5x + 6 = (x + 2)(x + 3)
2x + 5x = 7x
4(x2 + 4)
x(2+3)-70 5x-70 70/5= x-14
(x+5)(x+3)
x2 - 5x + 6 = (x - 2)(x - 3)