If -2x+1×-27=-212 , then ‘x’ =

-2x+1×-27=-212-2x+1+7=-212 am×an=am+nx+8=12 am=an⇔m=nx=12-8=4

-2x+1×-27=-212-2x+1+7=-212 am×an=am+nx+8=12 am=an⇔m=nx=12-8=4

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If ${(- 2)}^{x + 1} \times {(- 2)}^{7} = {(- 2)}^{12},$ then ‘x’ =

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${(- 2)}^{x + 1} \times {(- 2)}^{7} = {(- 2)}^{12}$

${(- 2)}^{x + 1 + 7} = {(- 2)}^{12} a^{m} \times a^{n} = a^{m + n}$

$x + 8 = 12 a^{m} = a^{n} \Leftrightarrow m = n$

$x = 12 - 8 = 4$

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