Упростите выражение (25 баллов):
[tex](ab+ \frac{ a^{3}-b^{3}}{a-b} ):(4 \frac{a^{2}b+ab^{2}}{ab} + \frac{a^{2}-b^{2}}{b-a} )[/tex]
[tex](ab+ \frac{ a^{3}-b^{3}}{a-b} ):(4 \frac{a^{2}b+ab^{2}}{ab} + \frac{a^{2}-b^{2}}{b-a} )[/tex]
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1)ab+(a-b)(a+b)/(a-b=ab+a+b2)4*ab(a+b)/ab+(a-b)(a+b)/(b-a)=4a+4b-a-b=3a+3b
3)(ab+a+b):3(a+b)=(ab+a+b)/(3a+3b)