Question

Choose the correct simplification of the quantity of x to the 7th power over y to the 9th power all raised to the 2nd power.

x to the 14th power over y to the 18th power

x to the 9th power over y to the 11th power

x to the 5th power over y to the 7th power

x14y18

Answer 1

x^7 (x^7)^2 x^(7*2) x^14
( ---- )^2 = -------- = --------- = ------
y^9 (y^9)^2 y^(9*2) y^18

so first is right