Question

MULTIPLY (5x - y) (3x² + 4xy + y²) and verify the result by LHS and RHS method by taking x = -2 y = 2.​

Answer 1

Step-by-step explanation:

$(5x - y)( {3x}^{2} + 4xy + {y}^{2} ) \\ {15x}^{3} + {20x}^{2} y + {5xy}^{2} - {3x}^{2} y - {4xy}^{2} - {y}^{3} \\ {15x}^{3 } + {17x}^{2} y + {xy}^{2} - {y}^{3}$