Question

Geometrical proofs of (a + b)square and (a + b)cube

Answer 1

Answer:

(a+b)^2=(a+b)(a+b)=a^2+ab+ab+b^2=a^2+2ab+b^2

(a+b)^3=(a+b)^2+(a+b)=a^2+2ab+b^2(a+b)

=a^3+a^2b+2a^2b+2ab^2+ab^2+b^3

=a^3+3a^2b+3ab^3+b^3

l hope you understand