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Simplifying -2(2(2) + -4) = -4(-2 + 2) Multiply 2 * 2 -2(4 + -4) = -4(-2 + 2) Combine like terms: 4 + -4 = 0 -2(0) = -4(-2 + 2) Multiply -2 * 0 0 = -4(-2 + 2) Anything times zero is zero. 0 = -4(-2 + 2) Combine like terms: -2 + 2 = 0 0 = -4(0) Multiply -4 * 0 0 = 0 Anything times zero is zero. 0 = 0 Solving 0 = 0 Couldn't find a variable to solve for. This equation is an identity, all real numbers are solutions.
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