Question

Descompuneti in factori:
a) $x^{2}$ - 5x +4=
b) $x^{2}$ -5x+6=
c) $x^{2}$ -7x+10=
d) $x^{2}$ -10x+24=

Answer 1

a) $x^{2}$ - x - 4x +4=x(x-1)-4(x-1)=(x-1)(x-4)
b) $x^{2}$ - 2x -3x + 6= x(x-2)-3(x-2)=(x-2)(x-3)
c) $x^{2}$ -2x-5x + 10=x(x-2)-5(x-2)=(x-2)(x-5)
d) $x^{2}$ -6x-4x +24=x(x-6)-4(x-6)=(x-6)(x-4)