Final answer:
The question concerns solving for the variable 'p' in an equation. Simplifying and using algebraic principles helps determine that 'p' equals -2, which is verified when substituted back into the original equation.
Step-by-step explanation:
The question pertains to solving an equation for a variable, specifically the variable p. By simplifying the equation and applying algebraic methods such as the power rules and setting equations equal to each other, one can find the value of p that makes the equation true. In this case, the equation simplifies to p = -2, which is validated by substitution back into the original equation.
The process involves understanding negative exponents, which means inverting the base and raising it to the positive exponent; for instance, x-n equals 1/xn. Also, dealing with a system of equations, like the demand and supply equation given by Qd = Qs, requires one to use algebra to solve for the unknowns. In the example provided, equating the demand and supply equations and solving for p would give the correct value that balances the two.