How do you evaluate the expression 4x324x3 given x=3 and y=5?

Step 1 If x=3, then plug that into the expression (was one of the x's supposed to be y?). 4(3)424(3)3 Evaluate the exponents first. In order of operation, exponents come before multiplication. 34=81 and 33=27 4(81)24(27) 324648=12 Or, you could first simplify the x4x3=x Then the problem becomes 4x24 Plugging in 3 for x: 4(3)24=1224=12 However, is it possible you entered the problem incorrectly? We never used y=5. Was one of the x's supposed to be y?

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High School
Algebra
Pre-Algebra
Equations, expressions, and inequalitie

ku3sump8

Answered question

2022-02-05

How do you evaluate the expression

\frac{4 x^{3}}{24 x^{3}}

given

x = 3

and

y = 5

Answer & Explanation

Dana Sanford

Beginner2022-02-06Added 10 answers

Step 1
If $x = 3$ , then plug that into the expression (was one of the x's supposed to be y?).
$\frac{4 {(3)}^{4}}{24 {(3)}^{3}}$
Evaluate the exponents first. In order of operation, exponents come before multiplication.
$3^{4} = 81$ and $3^{3} = 27$
$\frac{4 (81)}{24 (27)}$
$\frac{324}{648} = \frac{1}{2}$
Or, you could first simplify the $\frac{x^{4}}{x^{3}} = x$
Then the problem becomes $\frac{4 x}{24}$
Plugging in 3 for x:
$\frac{4 (3)}{24} = \frac{12}{24} = \frac{1}{2}$
However, is it possible you entered the problem incorrectly? We never used $y = 5$ . Was one of the x's supposed to be y?

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