Simplify: (a^b * b^a)/(c^b) * b^-c * 1/a Fraction Expression

Question

abbacbbc1a=? \frac{a^bb^a}{c^b}\cdot b^{-c}\cdot\frac{1}{a}=\text{?}

Video Solution

Solution Steps

00:00 Simplify the following problem
00:03 In order to eliminate a negative exponent
00:07 We'll invert the numerator and denominator and the exponent will become positive
00:12 Examples
00:25 We'll apply this formula to our exercise, and then convert from a numerator to a denominator
00:42 Make sure to multiply the numerator by the numerator and the denominator by the denominator
00:48 When multiplying powers with equal bases
00:53 The exponent of the result equals the sum of the exponents
00:58 We'll apply this formula to our exercise, we'll then proceed to add up the exponents
01:03 This is the solution

Step-by-Step Solution

To solve the given problem, we'll apply the laws of exponents to simplify the expression abbacbbc1a \frac{a^b b^a}{c^b} \cdot b^{-c} \cdot \frac{1}{a} .

Let's go through each step:

  • Start with the expression abbacbbc1a \frac{a^b b^a}{c^b} \cdot b^{-c} \cdot \frac{1}{a} .
  • Rewrite bc b^{-c} as 1bc \frac{1}{b^c} using the rule xn=1xn x^{-n} = \frac{1}{x^n} .
  • Substitute it back: abbacb1bc1a \frac{a^b b^a}{c^b} \cdot \frac{1}{b^c} \cdot \frac{1}{a} .
  • Combine the expressions into a single fraction: abbacbbca \frac{a^b b^a}{c^b \cdot b^c \cdot a} .
  • Use the rule xmxn=xm+n x^m \cdot x^n = x^{m+n} to simplify the exponents in the numerator and denominator: - In the numerator, no changes necessary since terms are already separated. - In the denominator, combine ba b^a and bc b^c using the exponent rule: ba+c b^{a+c} .
  • Update the fraction: abababa+c1cb \frac{a^b}{a} \cdot \frac{b^a}{b^{a+c}} \cdot \frac{1}{c^b} .
  • Simplify each component: - aba=ab1 \frac{a^b}{a} = a^{b-1} , - baba+c=ba(a+c)=bc=1bc \frac{b^a}{b^{a+c}} = b^{a-(a+c)} = b^{-c} = \frac{1}{b^c} .
  • Combine all components: ab1cbbc \frac{a^{b-1}}{c^b \cdot b^c} .
  • Express the result combining all simplified terms: 1a1bbcacb \frac{1}{a^{1-b} b^{c-a} c^b} .

Therefore, the solution to the problem is 1a1bbcacb \frac{1}{a^{1-b} b^{c-a} c^b} .

Answer

1a1bbcacb \frac{1}{a^{1-b}b^{c-a}c^b}