Question

x la pătrat-7x+12
x la pătrat +7x+10
x la pătra-8x+15​

Answer 1

x^2 - 4x - 3x + 12 = x(x-4) - 3(x-4) = (x-4)(x-3)

x^2 + 2x + 5x + 10 = x(x+2) + 5(x+2) = (x+2)(x+5)

x^2 - 3x - 5x + 15 = x(x-3) - 5(x-3) = (x-3)(x-5)