Wykonaj mnożenie i zredukuj wyrazy podobne :
a) x(b+1)+x=
b) -a(3-b)+3a=
c) -a(a-5b+7)-ab=
proszee jak najszybciej dam naj .;d
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a) xb + x + x = xb + 2x
b) -3a +ab +3a = ab
c) -a(kwadrat) + 5ab - 7a - ab = -a(kwadrat) +4ab - 7a
a. xb+x+x=xb+2x
b. -3a+ab+3a=ab
c. -a+5ab-7a-ab=-a[kwadrat]4ab-8a