How do you convert a radical to a rational exponent expression?

1 answer:

3 0

Remember the index of the radical will become the denominator of the fractional exponent, and the power will become the numerator. create the denominator first and then the numerator. create the numerator first and then the denominator.
i hope this helped :)

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2( 10 - a^2 ) + 7a If ( a = 4 )Evaluate each expression

Lostsunrise [7]

Solution:

Given:

$2(10-a^2)+7a$

when a = 4, substitute for a in the expression;

$\begin{gathered} 2(10-a^2)+7a=2(10-4^2)+7(4) \\ =2(10-16)+28 \\ =2(-6)+28 \\ =-12+28 \\ =16 \end{gathered}$

Therefore, if (a = 4), then

$2(10-a^2)+7a=16$

Hence, the answer is 16.

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Answer:

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Step-by-step explanation:

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earnstyle [38]

Answer:

The answer is 9.725

Step-by-step explanation:

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