Math Problem Statement

simplfy (x^(7/4)y^(-1/2)*yx^(2/3))^(3/4)/x^(1/2)y^(3/2)

Solution

Let's simplify the given expression:

(x7/4y1/2yx2/3)3/4x1/2y3/2\frac{ \left( x^{7/4} y^{-1/2} \cdot y \cdot x^{2/3} \right)^{3/4} }{ x^{1/2} y^{3/2} }

Step 1: Simplify the terms inside the parentheses

We start by combining the terms inside the parentheses (x7/4y1/2yx2/3)(x^{7/4} y^{-1/2} \cdot y \cdot x^{2/3}).

For y1/2yy^{-1/2} \cdot y, apply the rule yayb=ya+by^a \cdot y^b = y^{a+b}:

y1/2y1=y(1/2+1)=y1/2y^{-1/2} \cdot y^1 = y^{(-1/2 + 1)} = y^{1/2}

For x7/4x2/3x^{7/4} \cdot x^{2/3}, apply the rule xaxb=xa+bx^a \cdot x^b = x^{a+b}. First, we need to express 2/32/3 as a fraction with denominator 12, so:

x7/4x2/3=x7/4+8/12=x21/12+8/12=x29/12x^{7/4} \cdot x^{2/3} = x^{7/4 + 8/12} = x^{21/12 + 8/12} = x^{29/12}

Thus, the expression inside the parentheses becomes:

x29/12y1/2x^{29/12} y^{1/2}

Step 2: Apply the exponent 3/43/4 to each term

Now we raise each term inside the parentheses to the power 3/43/4:

(x29/12y1/2)3/4=x(29/12)(3/4)y(1/2)(3/4)\left( x^{29/12} y^{1/2} \right)^{3/4} = x^{(29/12) \cdot (3/4)} \cdot y^{(1/2) \cdot (3/4)}

Simplifying the exponents:

x(29/12)(3/4)=x87/48=x29/16x^{(29/12) \cdot (3/4)} = x^{87/48} = x^{29/16} y(1/2)(3/4)=y3/8y^{(1/2) \cdot (3/4)} = y^{3/8}

Thus, we have:

x29/16y3/8x^{29/16} y^{3/8}

Step 3: Simplify the entire fraction

We now divide the expression x29/16y3/8x^{29/16} y^{3/8} by x1/2y3/2x^{1/2} y^{3/2}:

x29/16y3/8x1/2y3/2\frac{x^{29/16} y^{3/8}}{x^{1/2} y^{3/2}}

Apply the rule xaxb=xab\frac{x^a}{x^b} = x^{a-b} to both the xx-terms and the yy-terms:

For the xx-terms:

x29/16x1/2=x29/168/16=x21/16x^{29/16} \cdot x^{-1/2} = x^{29/16 - 8/16} = x^{21/16}

For the yy-terms:

y3/8y3/2=y3/812/8=y9/8y^{3/8} \cdot y^{-3/2} = y^{3/8 - 12/8} = y^{-9/8}

Final Simplified Expression:

x21/16y9/8x^{21/16} y^{-9/8}

This is the simplified form of the given expression.

Would you like further details or have any questions?

Related Questions:

  1. How do we combine exponents when multiplying terms with the same base?
  2. What is the general rule for distributing exponents over products?
  3. How can you simplify expressions with fractional exponents?
  4. How do negative exponents affect the final expression?
  5. Why do we need to express exponents with common denominators when adding them?

Tip: When dealing with exponents, it’s useful to break the problem down into smaller steps and use the properties of exponents methodically.

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Math Problem Analysis

Mathematical Concepts

Algebra
Exponentiation
Fractional Exponents
Negative Exponents

Formulas

a^m * a^n = a^(m+n)
(a^m)^n = a^(m*n)
a^m / a^n = a^(m-n)

Theorems

Laws of Exponents

Suitable Grade Level

Grades 10-12