September 2018 1 20 Report

Proszę o pomoc w rozwiązaniu przykładów. Z góry dziękuję

a) (2x+3)^2 = (1-2x)+(4-4x)=

b) (4x-3)(4x+3)-(x+1)^2=15(x-2)^2-10-2x

c) x(x-2)-(x+1)(x-3)=1+2x =

d) (1-2x)(1+2x) + 6x^2+2 = 3x^2 - (x+5)^2 + 11+x^2 =

------------------ -------- ------ --------- ---------

3 5 10 2 15

^2 - to znaczy : do potęgi 2.


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