Question

(a-1)(a-2)-(a-5)(a+3) при a=-8 (a-3)(a+4)-(a+2)(9a+5)при a=-16 (a-7)(a+4)-(a+3)(a-10) при a=-0.15 (a+2)(a+5)-(a+3)(a+4) при a= -0.4

Answer 1

1) (-8-1)(-8-5)-(-8-5)(-8+3)=35