Oblicz wartość wyrażenia dla :

Question

a )      (x-4)(x-5)(x-3)(x-7)(x-8)(x-6) dla x=3

  b )      (x+4)+(x+3)+(x+4)+(x+5)+(x+2)  dla x = -4

Answer 1

a) (3-4)(3-5)(3-3)(3-7)(3-8)(3-6) = -1 ⋅ (-2) ⋅ 0 ⋅ (-4) ⋅ (-5) ⋅ (-3) = 0

b) (-4+4) + (-4+3) + (-4+4) + (-4+5) + (-4+2) = 0+(-1)+0+1+(-2) = -2