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trouble on it

2007-08-30 14:07:14 · 5 answers · asked by lari b 1 in Science & Mathematics Mathematics

5 answers

Square both sides:

2x+1 = 5 - 2x ---> 4x = 4 ---> x=1

2007-08-30 14:15:17 · answer #1 · answered by nyphdinmd 7 · 0 0

a function raised to the 1/2 is the square root of that function. in this case, both functions are square root. to solve this, first you must eliminate the exponents (in this case, square roots) by raising both sides to theit least common exponent (in this case by two or "square") and multiplying the exponents. thus,

[(2x + 1)^1/2]^2 = [(5 - 2x)^1/2]^2

wherein 2 is the least common exponent. then, multiplying the exponents 1/2 x 2, this will result to

(2x+1) = (5 - 2x)

simplifying the equation, you get

2x + 2x = 5 - 1

where you get

4x = 4 or x = 1

in cases where in one side of the equation has exponent 1/3 and the other is 1/2, you rasie both sides by 6. ex. x^1/3 = y^1/2 (where x and y are equations), raise bothe sides by 6 and you'll get x^2 = y^3 then you can simplify from there.

2007-08-30 14:26:00 · answer #2 · answered by clark k 2 · 0 0

* is square root
=> *(2x+1)=*(5-2x)
<=> 2x+1=5-2x
and 2x+1>0
and 5-2x>0
<=> x=1
and x>-1/2
and x<2.5
=> x=1

2007-08-30 14:26:28 · answer #3 · answered by pooh 2 · 0 0

(2x+1)^1/2=(5-2x)^1/2
square both sides of the equation to take off square root...
which leaves us to..
2x+1=5-2x
transpose all with variables in left side and numbers on right...
2x+2x=5-1
compute...
4x=4
x=1

2007-08-30 14:20:02 · answer #4 · answered by abmawabmahc 1 · 0 0

(2x+1)^1/2=(5-2x)^1/2
2(2x+1)=2(5-2x)
4x+2=10-4x
4x+4x=10-2
8x=8
x=8/8
x=1

2007-08-30 14:19:38 · answer #5 · answered by Kiiki 1 · 0 0

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