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Expert: Sherman D. - 5/23/2008


Question
please explain how to do these 2 probelems

(1) (2x + 5) 1/2 power = 4  ( book says answer is 11/2)

(2) (2x+2) 2/3 power =6    ( not sure of this answer)

Answer
if by this you mean

1.)
(2x + 5)^(1/2) = 4
2x + 5 = 4^2
2x + 5 = 16
2x = 11
x = 11/2

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2.)
(2x + 2)^(2/3) = 6
2x + 2 = 6^(3/2)
2x + 2 = 2^(3/2) * 3^(3/2)
2(x + 1) = 2^(3/2) * (3^(3/2))
x + 1 = (2^(3/2) / 2^1) * 3^(3/2)
x = 2^((3/2) - 1) * 3^(3/2) - 1
x = 2^((3/2) - (2/2)) * 3^(3/2) - 1
x = 2^(1/2) * 3^(3/2) - 1
x = 2^(1/2) * (3^(1/2))^3 - 1
x = about 6.3485, or another way to put this is -1 + 3sqrt(6)

www.quickmath.com will solve these for you, but it won't show you the work, only the answer.

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Sherman D.

Expertise

I can answer questions dealing in mathematics of all kinds except for Physics and Calculus, but i can answer questions in Pre-Calculus and Chemistry. I can also answer questions in Recipes of all kinds. I can find games cheats/walkthroughs, but i can`t find a specific game online or offline. I can also do history and recipes for alcoholic beverages.

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Mathematics, Recipes, History, and Games.

Education/Credentials
High School graduated. I graduated with honors, and i was in Beta Club for a year and a half.

Awards and Honors
Principle's list and A and B honor roll in high school only.

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