For what value of the variable the value of the expression 4(5x–8) is 4 more than the value of the expression 2(4–x)?
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The answer would be option 4

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.