Question

a)(x+3) (x-2) b)(x+6) (2x+1) c)(x-5) (2-x) d)(-x+1) (x-2) e)(-5x-3) (2-x) f)(x+1) (x-2)

Answer 1

a: (x+3)(x-2)

=x^2-2x+3x-6

=x^2+x-6

b: (x+6)(2x+1)

=2x^2+x+12x+6

=2x^2+13x=6

c: (x-5)(2-x)

=-(x-2)(x-5)

=-(x^2-7x+10)

=-x^2+7x-10

d: (-x+1)(x-2)

=-x^2+2x+x-2

=-x^2+3x-2

e: (-5x-3)(2-x)

=(5x+3)(x+2)

=5x^2+10x+3x+6

=5x^2+13x+6

f: (x+1)(x-2)

=x^2-2x+x-2

=x^2-x-2

Answer 2

a) (x+3)(x-2)=x²+3x-2x-6 =x²+x-6

b) (x+6)(2x+1)= 2x²+12x+x+6 = 2x²+13x+6

c) (x-5)(2-x) = -x²+2x+5x-10= -x²+7x-10

d) (-x+1)(x-2)= -x²+x+2x-2= -x²+3x-2

e) (-5x-3)(2-x) = 5x²-10x+3x-6= 5x²-7x-6

f) (x+1)(x-2) = x²-2x+x-2= x²-x-2