b) (x+4)(2x+3) = (2x-5)(x-2)+22
2x²+3x+8x+12 = 2x²-4x-5x+10+22
11x+9x = 32-12
20x = 20
x = 1.
c) 3x(3x-4)+25 = (4x-1)(2x+5)+x²
9x²-12x+25 = 8x²+20x-2x-5+x²
-12x-18x = -5-25
-30x = -30
30x = 30
x = 1.
f) (x-1)(x+2)-(2-x)(3+x) = (2x-7)(x+4)
x²+2x-x-2-(6+2x-3x-x²) = 2x²+8x-7x-28
x²+2x-x-2-6-2x+3x+x² = 2x²+8x-7x-28
x²+2x+x²+8 = 2x²+x-28
x = -20.
Signed : Denissa
