x2 + 14x + 45 = 0 => x2 + 9x + 5x + 45 = 0 => x(x + 9) + 5(x + 9) = 0
(x + 9)(x + 5) = 0 so that x = -5 or x = -9
Chat with our AI personalities
x2 - 14x + 45 = (x - 9)(x - 5)
x2 + 14x + 48 = (x + 8)(x + 6)
49-apex
x2 - 14x = -49 ∴ x2 - 14x + 49 = 0 ∴ (x - 7)2 = 0 ∴ x = 7
x2+14x+40 = (x+4)(x+10) when factored