x2 + 8x + 15 = (x + 3) (x + 5).
x2 + 8x = x(x+8)
x + 4
x2+10x+1 = -12+2x x2+10x-2x+1+12 = 0 x2+8x+13 = 0 Solving by using the quadratic equation formula: x = - 4 - or + the square root of 3
x2+8x+9 = -7 x2+8x+9+7 = 0 x2+8x+16 = 0 (x+4)(x+4) = 0 Therefore: x = -4 and also x = -4 (they both have equal roots)
x2 + 8x + 12 = (x + 6) (x + 2)
(x + 6)(x + 2)
X2 + 8x + 16 = 10x +16x2 + 8x + 16=2x + 8x + 16=10x + 16
x2 + 8x + 15 = (x + 3)(x + 5)
x2 + 8x + 15 = (x + 3) (x + 5).
x2+8x+12 = 0 When factorized: (x+6)(x+2) = 0 Therefore: x = -6 or x = -2
x2-8x+12 = (x-2)(x-6) when factored
x2 + 8x - 20 = (x - 2)(x + 10).
x2 + 8x = x(x+8)
x2-8x+15 = (x-3)(x-5)
x² + 8x - 48 = (x + 12)(x - 4) x² + 8x + 48 = (4+(√32)i)(4-(√32)i)
x + 4