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If 2^(5x)=(16)/(2^(1-x)), find x.

If 25x=1621x 2^{5 x}=\frac{16}{2^{1-x}} , find x x .

Full solution

Q. If 25x=1621x 2^{5 x}=\frac{16}{2^{1-x}} , find x x .
  1. Write Equation Given: Write down the equation given in the problem.\newlineWe are given the equation 25x=1621x2^{5x} = \frac{16}{2^{1-x}}.
  2. Recognize Power of 22: Recognize that 1616 can be written as a power of 22. 1616 is 22 raised to the power of 44, so we can rewrite the equation as 25x=2421x2^{5x} = \frac{2^4}{2^{1-x}}.
  3. Combine Powers of 22: Use the property of exponents to combine the powers of 22 on the right side of the equation.\newlineWhen dividing like bases with exponents, we subtract the exponents: 25x=24(1x)2^{5x} = 2^{4 - (1-x)}.
  4. Simplify Exponent: Simplify the exponent on the right side of the equation. 25x=241+x2^{5x} = 2^{4 - 1 + x} which simplifies to 25x=23+x2^{5x} = 2^{3 + x}.
  5. Set Exponents Equal: Since the bases are the same and the equation is an equality, the exponents must be equal.\newlineSet the exponents equal to each other: 5x=3+x5x = 3 + x.
  6. Solve for x: Solve for x.\newlineSubtract xx from both sides to get 5xx=35x - x = 3, which simplifies to 4x=34x = 3.\newlineThen divide both sides by 44 to get x=34x = \frac{3}{4}.