How do you simplify ((2x^-1) / (3y^2)^2) times (3x^2)/(5y)?

1 Answer
Apr 16, 2016

(6x)/(45y^5)

Every step shown to aid understanding. As you become practised you will be able to skip steps.

Explanation:

Splitting the given expression down into its component parts

color(blue)("Consider "2x^(-1)

This is another way of writing: color(green)(2/x)

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
color(blue)("Consider " 1/((3y^2)^2))

This is another way of writing: color(green)(1/(9y^4))

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
color(blue)("Putting it all together")

2/x xx 1/(9y^4) xx(3x^2)/(5y)
'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
color(blue)("Simplifying")

(2xx1xx3x^2)/(x xx9y^4xx5y)

(6x^2)/(45xy^5)

Separate out the x's

x^2/x xx(6)/(45y^5)

(x xx x)/x xx(6)/(45y^5)

x /x xx x/1xx(6)/(45y^5)

But x/x=1

1xx x/1xx6/(45y^5)

(6x)/(45y^5)