Question

3x⁷y - 81x⁴y⁴ factories it by using formula​

Answer 1

Answer:

$=3x4y(x-3y)(x^{2} +3xy+ 9y^{2})$

Step-by-step explanation:

3x⁷y - 81x⁴y⁴

=3x⁴y($x^{3}$-27$y^{3}$)

$=3x^{4} y(x^{3} -(3y)^{3} )$

Using a $a^{3}-b^{3} = (a−b)(a^{2} + ab +b^{2}),$ we get

$3x4y(x-3y)(x^{2} + x(3y)+(3y)^{2})$

$=3x4y(x-3y)(x^{2} +3xy+ 9y^{2})$

Answer 2

Step-by-step explanation:

your answer