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The-solution-of-the-equation-1-a-a-2-a-3-a-x-1-a-1-a-2-1-a-4-is-given-by-x-




Question Number 56413 by gunawan last updated on 16/Mar/19
The solution of the equation  1+a+a^2 +a^3 +...+a^x =(1+a)(1+a^2 )(1+a^4 )  is given by x = _____.
Thesolutionoftheequation1+a+a2+a3++ax=(1+a)(1+a2)(1+a4)isgivenbyx=_____.
Commented by mr W last updated on 16/Mar/19
last term of LHS is a^x   last term of RHS is a^7   ⇒x=7
lasttermofLHSisaxlasttermofRHSisa7x=7

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