October 2018 2 10 Report

tylko 2 przyklady prosz prosze pomozcie !

Doprowadz wyrazenia do prostszej postaci, a nastepnieoblicz ich wartosci liczbowe:

1. (x-2)(x-3)+(x+6)(x-5)-2(x do kwadratu-7x+12)

dla x=5

2.(3x-1)(2x+1)+(2y+2)(y-3)-x(x-1)+y(y+4)=

dla x=-2, y=pierwiastek z 2


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