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Simplifying (X + -7)(x + -7) = x2 + kx + m Reorder the terms: (-7 + X)(x + -7) = x2 + kx + m Reorder the terms: (-7 + X)(-7 + x) = x2 + kx + m Multiply (-7 + X) * (-7 + x) (-7(-7 + x) + X(-7 + x)) = x2 + kx + m ((-7 * -7 + x * -7) + X(-7 + x)) = x2 + kx + m ((49 + -7x) + X(-7 + x)) = x2 + kx + m (49 + -7x + (-7 * X + x * X)) = x2 + kx + m (49 + -7x + (-7X + xX)) = x2 + kx + m Reorder the terms: (49 + -7X + -7x + xX) = x2 + kx + m (49 + -7X + -7x + xX) = x2 + kx + m Reorder the terms: 49 + -7X + -7x + xX = kx + m + x2 Solving 49 + -7X + -7x + xX = kx + m + x2 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-49' to each side of the equation. 49 + -7X + -7x + -49 + xX = kx + m + -49 + x2 Reorder the terms: 49 + -49 + -7X + -7x + xX = kx + m + -49 + x2 Combine like terms: 49 + -49 = 0 0 + -7X + -7x + xX = kx + m + -49 + x2 -7X + -7x + xX = kx + m + -49 + x2 Reorder the terms: -7X + -7x + xX = -49 + kx + m + x2 Add '7x' to each side of the equation. -7X + -7x + 7x + xX = -49 + kx + m + 7x + x2 Combine like terms: -7x + 7x = 0 -7X + 0 + xX = -49 + kx + m + 7x + x2 -7X + xX = -49 + kx + m + 7x + x2 Reorder the terms: 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = -49 + kx + m + 7x + x2 + 49 + -1kx + -1m + -7x + -1x2 Reorder the terms: 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = -49 + 49 + kx + -1kx + m + -1m + 7x + -7x + x2 + -1x2 Combine like terms: -49 + 49 = 0 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = 0 + kx + -1kx + m + -1m + 7x + -7x + x2 + -1x2 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = kx + -1kx + m + -1m + 7x + -7x + x2 + -1x2 Combine like terms: kx + -1kx = 0 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = 0 + m + -1m + 7x + -7x + x2 + -1x2 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = m + -1m + 7x + -7x + x2 + -1x2 Combine like terms: m + -1m = 0 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = 0 + 7x + -7x + x2 + -1x2 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = 7x + -7x + x2 + -1x2 Combine like terms: 7x + -7x = 0 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = 0 + x2 + -1x2 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = x2 + -1x2 Combine like terms: x2 + -1x2 = 0 49 + -7X + -1kx + -1m + -7x + xX + -1x2 = 0 The solution to this equation could not be determined.
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