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If the value of 2x3 is 2, then what is the value of x?

User Pthulin
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2 Answers

3 votes
x = 1, -1 .
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Given: 2x³ = 2 ; Divide each side of the equation by "2" ;

[2x³] / 2 = 2 / 2 ;

to get: x³ = 1 ;

Now, take the "cube root" of EACH SIDE of the equation; to isolate "x" on ONE SIDE of the equation; and to solve for "x" ;

∛(x³) = ∛1 ;

x = 1, -1 .
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User Ajordat
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8.0k points
7 votes
If the expression is 2*x*3, x must be 1/3 in order to cancel out the 3 which would leave the 2.
User Brendan Gannon
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8.4k points