Question

if x=2⅓+2-⅓ prove 2x³=6x+5​

Answer 1

Answer:

Please see the attachment

Answer 2

Solution :  

x=213−2−13  

2x3+6x=2(213−2−13)3+6(213−2−13)  

=2(2−2−1−3(213−2−13))+6(213−2−13)  

=4−1−6(213−2−13)+6(213−2−13)  

=3.

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