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I have got one mathematical problem and i am not able to solve it may i plese get some help. My sum is as foolws:-

a^2+b^2=25 and a^3+b^3=91 so now find the values of a and b.

Now here we cannot tahe into consideration that as a^2+b^2=25 , a=3 and b=4 or a=4 and b=3 .But we have to find it by mathematical formulas and without any assumptions. thank you in advance. Please send it soon