Algebra two

Question

What expression would be equivalent to 40x^7y^2/-8x^6y^4?

Answer 1

Stack 40x⁷y² on top of -8x⁶y⁴ as shown below:

40x⁷y²

-8x⁶y⁴

Divide 40 by -8 to yield -5; rewrite x⁷ over x⁶

as x⁽⁷⁻⁶⁾ or x¹ or x and rewrite y² over y⁴ as

y⁽²⁻⁴⁾ or y^(-2) or 1/y².

-5 times x times 1/y² finally gives

-5x .

y²