Descompunerea în factori prin gruparea termenilor

x²-3x+2=

• (x-2)(x-1)

• (x+2)(x+1)

x²-xy+xz-yz=

• (x+y)(x+z)

• (x-y)(x+z)

x²+2xy+2yz+zx=

• (x+2y)(x+z)

• (x+2y)(x-z)

x²+5x+4=

• (x+4)(x+1)

• (x+4)(x-1)

x²-4x+3=

• (x-3)(x+1)

• (x-3)(x-1)

x²+6x+8=

• (x+2)(x+4)

• (x-2)(x+4)

a(x+y)-bx-by=

• (x+y)(a-b)

• (x-y)(a-b)

x²-9x+20

• (x+4)(x+5)

• (x-4)(x-5)

x²+8x-9

• (x+9)(x-1)

• (x-9)(x+1)

x²-5x-14

• (x-7)(x+2)

• (x+7)(x-2)