Question

Find the product of (x-2y)(x+2y)(x^2+4y^2 )

Answer 1

Answer:

$x {}^{4} - 16y {}^{4}$

Step-by-step explanation:

by the identity (a+b)(a-b) = a2 -b2:

$((x) ^{2} - (2y) {}^{2} )( {x}^{2} + 4y ^{2} )$

$({x}^{2} - 4y {}^{2})( {x}^{2} + 4y {}^{2} )$

$({x}^{2}) {}^{2} - (4y {}^{2}) {}^{2}$

$x {}^{4} - 16y {}^{4}$