Question

Simplify (3y)^2 x y^-1

Answer 1

Answer:

9y

Step-by-step explanation:

$\bullet\; \tt{(3y)^2} = 3^2y^2 = 9y^2}$

$\bullet\; \tt y^{-1} = \dfrac{1}{y}\\\\\bullet\;(3y)^2 \times y^{-1} = 9y^2 \times \dfrac{1}{y } = \dfrac{9y^2}{y}\\\\\\bullet \tt \dfrac{y^2}{y} = y\\\\\tt \bullet \dfrac{9y^2}{y} = 9y$