Question 1066522
Use the caret to denote exponentiation,
5^(9x) and (1/25)^(2x)
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{{{25*5(9x)=(1/25)^(2x)}}}
{{{5^2*5^(9x)=(5^(-2))^(2x)}}}
{{{5^(9x+2)=5^(-4x)}}}
{{{9x+2=-4x}}}
{{{13x=-2}}}
{{{x=-2/13}}}