Q. Simplify the following expression to simplest form using only positive exponents.(27x−9y18)−35Answer:
Apply negative exponent rule: Apply the negative exponent rule to the entire expression.The negative exponent rule states that a−n=an1. We will apply this rule to the entire expression (27x−9y18)−35.
Rewrite with positive exponents: Rewrite the expression with positive exponents by taking the reciprocal.Taking the reciprocal of the base and making the exponent positive, we get:(1/(27x(−9)y(18)))(5/3)
Apply power rule: Apply the power rule to the expression inside the parentheses.The power rule states that (am)n=am∗n. We will apply this rule to each part of the expression inside the parentheses.(271)35∗(x−9)35∗(y18)35
Simplify each part: Simplify each part of the expression separately.Simplify (271)35, (x−9)35, and (y18)35 by multiplying the exponents.(271)35=27351(x−9)35=x(−9)⋅(35)=x−15(y18)35=y(18)⋅(35)=y30
Calculate 275/3: Calculate the value of 275/3. 27 is 33, so we can rewrite 275/3 as (33)5/3. (33)5/3=33∗(5/3)=35=243Therefore, 1/(275/3)=1/243
Combine simplified parts: Combine the simplified parts into one expression.Combine the results from the previous steps to get the final expression with positive exponents.2431×x−15×y30
Rewrite x−15: Rewrite x−15 with a positive exponent.To rewrite x−15 with a positive exponent, we take the reciprocal of x to the power of 15.2431×x151×y30
Combine the fractions: Combine the fractions. Combine the fractions to get a single fraction. 243x151⋅y30
Write final expression: Write the final simplified expression.The final simplified expression is:y30/(243x15)
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