Question

$$(4 { x }^{ 2 } -13 { y }^{ 3 } )(4 { x }^{ 2 } +15 { y }^{ 3 } )$$

Evaluate

$16x^{4}+8x^{2}y^{3}-195y^{6}$

Expand

$16x^{4}+8x^{2}y^{3}-195y^{6}$