Question

(7x–_____)raised to the power 2=49xraised to the power 2–70x+25.

Answer 1

Answer:

\begin{gathered} {7}^{x} \times {7}^{2} = {49}^{x + 2 \\ } \\ {7}^{x} \times {7}^{2} = {7}^{2(x + 2)} \\ {7}^{x + 2} = {7}^2x + 4} \\ x + 2 = 2x + 4 \\ \\ x = - 2\end{gathered}