Question

write the formula of :- (20p)
${(a + b)}^{2} =$
$({a + b})^{3} =$
$( {a - b)}^{2} =$
$( {a - b)}^{3} =$
please solve this you will get 20points of each​

Answer 1

${(a + b)}^{2} =a {}^{2} + 2ab +b{}^{2} \\ {(a - b)}^{2} = a {}^{2} - 2ab + b {}^{2}$

Answer 2

Answer:

(a+b)² = a² + 2ab + b²

(a–b)² = a² – 2ab + b²

(a + b)³ = a³ + 3a²b + 3ab² + b³

(a–b)³ = a³ – 3a²b + 3ab² + b³

I hope it is helpful