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Simplifying x2 + -4 = x2 + -16 Reorder the terms: -4 + x2 = x2 + -16 Reorder the terms: -4 + x2 = -16 + x2 Add '-1x2' to each side of the equation. -4 + x2 + -1x2 = -16 + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -4 + 0 = -16 + x2 + -1x2 -4 = -16 + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 -4 = -16 + 0 -4 = -16 Solving -4 = -16 Couldn't find a variable to solve for. This equation is invalid, the left and right sides are not equal, therefore there is no solution.
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