Question

A2+B2 =
A-B=
A3+B3=
A3-B3=

Answer 1

Answer:

Put the value of a2+b2.. You get ab=28,. Now use the formula ,. (a+b)3=a3+b3 ...

3 votes

[math]a^3+b^3=(a+b)(a^2-ab+b^2)[/math] [math]=(a+b)(2a^2-2ab+2b^2)/2[/math] [math]=(a+b)(3a^2+3b^2