6a -12b + 30 = 6 (a - 2b + 5)
x^2+7x-30 = (x-3)(x+10)
2 x (2a + 3b - 6)
2x + 12 = 2*x + 2*6 = 2*(x + 6)
(a + 6)(a + 4)
2x + 7 + 5 = 2x + 12 = 2*x + 2*6 = 2*(x+6)
3 + 6 + 9 + 12 = 30
Do you mean 2x²? Assuming this is the case: 2x² - 3x + 8x - 12 = 2x² + 5x - 12 = (2x - 3)(x + 4)
X=5
p2+10d+7
20 + 12 + 32 + 20 + 30 + 72 = 186
-6