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Calculate the power $4^2$
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$\left(8-a\right)^2=a^2-1\cdot 16$
Learn how to solve quadratic equations problems step by step online. Solve the quadratic equation (8-a)^2=a^2-4^2. Calculate the power 4^2. Multiply -1 times 16. Expand \left(8-a\right)^2. Group the terms of the equation by moving the terms that have the variable a to the left side, and those that do not have it to the right side.