How do you evaluate the expressions $(4x^4)/( 24x^3)$ given x= 3 and y=5?

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Answer 1 · 2016-09-06T14:54:31

Plug in 3 for x.

If x=3, then plug that into the expression (was one of the x's supposed to be y?).

$(4(3)^4)/(24(3)^3)$

Evaluate the exponents first. In order of operation, exponents come before multiplication.
$3^4 = 81$ and $3^3= 27$

$(4(81))/(24(27))$

$324/648 = 1/2$

Or, you could first simplify the $x^4/x^3 = x$

Then the problem becomes $(4x)/24$

Plugging in 3 for x:

$(4(3))/24 = 12/24 = 1/2$

However, is it possible you entered the problem incorrectly? We never used y= 5. Was one of the x's supposed to be y?

How do you evaluate the expressions (4x^4)/( 24x^3)(4x^4)/( 24x^3) given x= 3 and y=5?