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12-19.
  1. Solve each equation. Homework Help ✎

    1. + 5 = x

Subtract 5 from both sides to isolate the radical.

Square both sides to get rid of the radical sign.

Set the equation equal to 0 and usethe Quadratic Formula to solve for x.

What are the factors of a2 − 36? Multiply both sides of the equation by a common denominator to remove the fractions.

a = −9