96.3k views
4 votes
If the value of 2x3 is 2, then what is the value of x?

User Pthulin
by
7.3k points

2 Answers

3 votes
x = 1, -1 .
____________________________
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 .
____________________________________________

User Ajordat
by
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
by
8.4k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.