Question

what is the formula of ab in algebra?

Answer 1

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

Answer 2

Answer:

$\begin{gathered}{\Huge{\textsf{\textbf{\red{\underline{\underline{Answer :}}}}}}}\end{gathered}$

$\begin{gathered}\begin{gathered}\small \boxed{\boxed{\begin{array}{c} \bf{\dag}\:\underline{\rm{Some\:important\:algebric\:identities\:::}} \\\\ \small{\bigstar}\:\rm{ (A+B)^{2} = A^{2} + 2AB + B^{2}} \\\\ \small{\bigstar}\rm\: {(A-B)^{2} = A^{2} - 2AB + B^{2}} \\\\ \small{\bigstar}\rm\:{A^{2} - B^{2} = (A+B)(A-B)}\\\\ \small{\bigstar}\rm\:{(A+B)^{2} = (A-B)^{2} + 4AB}\\\\ \small{\bigstar}\rm\: {(A-B)^{2} = (A+B)^{2} - 4AB}\\\\ \small{\bigstar} \rm\:{(A+B)^{3} = A^{3} + 3AB(A+B) + B^{3}}\\\\ \small{\bigstar}\rm\:(A-B)^{3} = A^{3} - 3AB(A-B) + B^{3}\\\\ \small\bigstar\rm\: {A^{3} + B^{3} = (A+B)(A^{2} - AB + B^{2})} \end{array}}}\end{gathered}\end{gathered}$