Q. Simplify the following expression to simplest form using only positive exponents.(64x−2y−10)23Answer:
Understand Expression and Rule: Understand the expression and the exponent rule.The expression is (64x−2y−10)23. We need to apply the power of a power rule, which states that (am)n=am∗n. We will apply this rule to each part of the expression separately.
Apply Power of Power Rule to Coefficient: Apply the power of a power rule to the numerical coefficient.The numerical coefficient is 64, which is a perfect square (82). We raise it to the power of (3/2), which is the same as taking the square root and then cubing the result.(64)(3/2)=(82)(3/2)=82∗(3/2)=83=512.
Apply Power of Power Rule to x Term: Apply the power of a power rule to the x term.The x term is x−2. We raise it to the power of (3/2).(x−2)(3/2)=x(−2)∗(3/2)=x−3.To express the exponent as positive, we take the reciprocal of x3.x−3=x31.
Apply Power of Power Rule to y Term: Apply the power of a power rule to the y term.The y term is y−10. We raise it to the power of (3/2).(y−10)(3/2)=y(−10)∗(3/2)=y−15.To express the exponent as positive, we take the reciprocal of y15.y−15=y151.
Combine Results: Combine the results from Steps 2, 3, and 4.We have 512 for the numerical coefficient, 1/x3 for the x term, and 1/y15 for the y term. Combining these, we get:512×(1/x3)×(1/y15)=512/(x3×y15).
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