Q. Simplify the following expression to simplest form using only positive exponents.(64x−3y−15)34Answer:
Apply Power to Factors: Apply the power to each factor inside the parentheses.When raising a power to a power, you multiply the exponents. In this case, we have a fractional exponent (4/3), which we will apply to each factor inside the parentheses.(64x−3y−15)(4)/(3)=64(4)/(3)∗x−3∗(4)/(3)∗y−15∗(4)/(3)
Simplify Each Factor: Simplify each factor separately.First, we simplify 64(4)/(3). Since 64 is 43, we can rewrite this as (43)(4)/(3).64(4)/(3)=(43)(4)/(3)=43∗(4)/(3)=44=256Next, we simplify the x and y terms by multiplying the exponents.x(−3∗(4)/(3))=x−4y(−15∗(4)/(3))=y−20
Rewrite with Positive Exponents: Rewrite the expression with positive exponents.To convert negative exponents to positive, we take the reciprocal of the base raised to the positive of the negative exponent.x−4 becomes x41y−20 becomes y201
Combine Simplified Factors: Combine the simplified factors.Now we combine the simplified factors to get the final expression.256×(x41)×(y201)
Write Final Answer: Write the final answer.The final simplified expression with positive exponents is:x4y20256
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