Question

$- x {b}^{3} \times ( - {a}^{3} {x}^{2} - 4by)$
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Answer 1

$- x {b}^{3} \times ( - {a}^{3} {x}^{2} - 4by)$

$- {b}^{3} x \times ( - {a}^{3} {x}^{2} - 4by)$

${a}^{3} {b}^{3} {x}^{3} + 4 {b}^{4} xy$