Question

Faktorkanlah
a. x²-4x-21
b. x²-12x+35
c. x²+3x-40
d. 2x²+8x+6
e. 6x²-8x+2
f. 2x²-7x+3

Answer 1

A. (x+3) (x-7)
b. (x-5) (x-7)
c. (x+8) (x-5)
d. (2x+2) (x+3 )
e (6x-2) (x-1)
f. (2x-1) (x-3)

Answer 2

A. x*2-4x-21=(x-7)(x+3)
b. x*2-12x+35=(x-7)(x-5)
c. x*2+3x-40=(x+8) (x-5)
d. 2x*2+8x+6=2x*2+2x+6x+6=(2x*2+2x)+(6x+6)=2x(x+1)+6(x+1)=(2x+6)(x+1)
e. 6x*2-8x+2=6x*2-6x-2x+2=(6x*2-6x)-(2x-2)=6x(x-1)-2(x-1)=(6x-2)(x-1)
f. 2x*2-7x+3=2x*2-x-6x+3=(2x*2-x)-(6x-3)=x(2x-1)-3(2x-1)=(x-3)(2x-1)