Question

(a + b)³=

solve it..............​

Answer 1

(a+b)³ = a³ + b³ +3a b² + 3ba²

Prove :-

(a+b)³ = (a+b) (a+b)² = (a+b)(a² + 2ab + b²)

=a³ +2a² b + ab² + ba² +2ab² + b³

= a³ + 3ab² + 3ba² + b²

Or

a³ + 3ab(a+b) + b³

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Answer 2

$\huge\bigstar\underline\mathfrak{Answer:-}$

$\longrightarrow$$\sf{(a + b}^{3)}$

$\longrightarrow$$\sf(a + b) {(a + b)}^{2}$

$\longrightarrow$$\sf(a + b) ({a}^{2} + 2ab + {b}^{2} )$

$\longrightarrow$$\sf{a}^{3} + 2 {a}^{2} b + {ab}^{2} + {ba}^{2} + {2ab}^{2} + {b}^{3}$

$\longrightarrow$$\sf{a}^{3} + {3ab}^{2} + {3ba}^{2} + {b}^{2}$