Question

by using identity (5)3+(4)3

Answer 1

here is ur answer mate...

Answer 2

$\bf\large\color{Red}{Hey\: Friend}$

${x}^{3} + {y}^{3} =( x + y)( {x}^{2} - xy + {y}^{2} \\ = > (5 + 4)( {5}^{2} - 5 \times 4 + {4}^{2} ) \\ = > (9)(25 - 20 + 16) \\ = > 9 \times 21 \\ = 189$

[^_^] <Hope it helps☺
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