Question

can you simplify this and give me the simplified answer and the domain?

Answer 1

the given expression is,

$-\frac{25x^3y^3}{14a^2b}\times(-\frac{21ab}{10x^2y})$

now we solve it,

$=\frac{25x^3y^3}{10x^2y}\times\frac{21ab}{14a^2b}$$=\frac{5x^{3-2}y^{3-1}}{2}\times\frac{21}{14a^{2-1}}$$=\frac{105xy^2}{28a}$

thus,, the answer is 105xy^2 / 28a