Question

(X + Y) power 3 minus (x minus y power 3 ​

Answer 1

Step-by-step explanation:

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Answer 2

Solution:-

$\color{magenta}(x + y) {}^{3} -( x - y) {}^{3} \\ \color{green}Using \: The \: Formula :- \\ \color{lime} {a}^{3} - {b}^{3} = (a - b)( {a}^{2} + ab + {b}^{2} ) \\ \implies(x + y) - (x - y)(x + y) {}^{2} + (x + y)(x - y) + (x - y) {}^{2} \\ \implies \: x + y - x + y \:( {x}^{2} + 2xy + {y}^{2} + {x}^{2} - {y}^{2} + {}^{2} - 2xy + {y}^{2} \\ \implies \: 2y(3x {}^{2} + {y}^{2} ) \\ \color{cyan} \implies \: 6x {}^{2} y + 2y {}^{3}$

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