METTATON WROTE -25 / (-100) = -21/-100 = -(1/40) AND -2 * (-2) = -4. DISCUSS AND CORRECT HIS MISTAKES.
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-21/-100 = [ -1 * 21 ] / [ -1 * 100 ] = +1 * 21 / 100 = = +0.21
-2 * -2 = -1 * -1 * 2 *2 = (-1)^2 * 4 = +1*4 = +4