Zredukuj wyrazy podobne :
a)-(2a2 - 3ab) - (2b -3a2) +( ab-b) =
b)(a+4b) - (5+2a) - (3b*5) =
c)(a-a2 + 2ab -1) + (a2-4ab+5) =
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a)-(2a2 - 3ab) - (2b -3a2) +( ab-b) =-2a²+3ab-2b+3a²+ab-b=a²4ab-3b
b)(a+4b) - (5+2a) - (3b*5) =a+4b-5-2a-15b=-a-11b-5
c)(a-a2 + 2ab -1) + (a2-4ab+5) =a-a²+2ab-1+a²-4ab+5=-a-2ab+4