September 2018 2 10 Report

1.

Wyrażenia algebraiczne


a) [(x - 5)(x + 3) + (2x + 4)(x + 1)](x + 3) =

b) (2 - x)[(x + 2)(x - 4)-(2x + 1)(-x - 3)] =

c)(x - 3)[(3x + 1)(2x - 2) + (4 - 2x)(5x - 1)]=

d)[(x + 1)(3x - 4)-(x + 5)(2x - 1)](x + 1)=


3.

a.2(-3a - 4b) - 3(a+ 2b) + 4(20 + 36)= a=-3 , b=2

b.-2 (a - 3b) + 4(b -2a) - 3(5a + 3b) = a=-1 , b=-4

c.[tex]3(x^{2} - 5x + 2) - 4(3 +2x + x^{2})= x=-2

d.[tex]2( - 2x^{2} + 5x - 1) -5(2- x - x^{2})= x=1



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