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Question Number 93470 by I want to learn more last updated on 13/May/20

$$\mathbf{Solve}:3{\mathbf{x}}^{\mathbf{x}+1}-3{\mathbf{x}}^{\mathbf{x}-1}=8$$

Commented by i jagooll last updated on 13/May/20

$$\mathrm{aproximate}$$$$\mathrm{x}\approx 1.6901049597962$$

Commented by I want to learn more last updated on 13/May/20

$$\mathrm{Is}\mathrm{there}\mathrm{any}\mathrm{workings}\mathrm{sir}?$$

Commented by john santu last updated on 13/May/20

Commented by john santu last updated on 13/May/20

$$\mathrm{sir}\mathrm{jagool}\mathrm{is}\mathrm{correct}$$

Answered by Rasheed.Sindhi last updated on 13/May/20

$$3{\mathbf{x}}^{\mathbf{x}+1}-3{\mathbf{x}}^{\mathbf{x}-1}=8$$$$3{\mathbf{x}}^{\mathbf{x}}\times x-3{\mathbf{x}}^{\mathbf{x}}/x=8$$$$Sorryformistake$$$$9{\mathbf{x}}^{\mathbf{x}}-{\mathbf{x}}^{\mathbf{x}}=8$$$$8{\mathbf{x}}^{\mathbf{x}}=8$$$${\mathbf{x}}^{\mathbf{x}}=1$$$${\mathbf{x}}^{}=1(\because 1^1=1)$$$$$$

Commented by i jagooll last updated on 13/May/20

$$??\mathrm{if}\mathrm{x}=1\Rightarrow 3.1^2-3.1^0=8??$$$$\mathrm{why}?\mathrm{sir}$$

Commented by Rasheed.Sindhi last updated on 13/May/20

$$Sorryformistake.$$

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