SOLUTION: How do I do these?
Solve the equation 9^x-1=(1/3)^2x
Solve the equation 4^3x-1=1.5625x10^-2
Algebra.Com
Question 236404: How do I do these?
Solve the equation 9^x-1=(1/3)^2x
Solve the equation 4^3x-1=1.5625x10^-2
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Solve for x:
Substitute
Multiply the exponents on the left side.
Invert the right side and change the sign of the exponent.
Now since the bases (3) are equal, the exponents must be equal, so...
Add 2x to both sides.
Add 2 to both sides.
Divide both sides by 4.
Simplify.
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