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Simplifying (x + 7)(x + -3) = (x + 1) * 2nd Reorder the terms: (7 + x)(x + -3) = (x + 1) * 2nd Reorder the terms: (7 + x)(-3 + x) = (x + 1) * 2nd Multiply (7 + x) * (-3 + x) (7(-3 + x) + x(-3 + x)) = (x + 1) * 2nd ((-3 * 7 + x * 7) + x(-3 + x)) = (x + 1) * 2nd ((-21 + 7x) + x(-3 + x)) = (x + 1) * 2nd (-21 + 7x + (-3 * x + x * x)) = (x + 1) * 2nd (-21 + 7x + (-3x + x2)) = (x + 1) * 2nd Combine like terms: 7x + -3x = 4x (-21 + 4x + x2) = (x + 1) * 2nd Reorder the terms: -21 + 4x + x2 = (1 + x) * 2nd Reorder the terms for easier multiplication: -21 + 4x + x2 = 2dn(1 + x) -21 + 4x + x2 = (1 * 2dn + x * 2dn) -21 + 4x + x2 = (2dn + 2dnx) Solving -21 + 4x + x2 = 2dn + 2dnx Solving for variable 'x'. Reorder the terms: -21 + -2dn + -2dnx + 4x + x2 = 2dn + 2dnx + -2dn + -2dnx Reorder the terms: -21 + -2dn + -2dnx + 4x + x2 = 2dn + -2dn + 2dnx + -2dnx Combine like terms: 2dn + -2dn = 0 -21 + -2dn + -2dnx + 4x + x2 = 0 + 2dnx + -2dnx -21 + -2dn + -2dnx + 4x + x2 = 2dnx + -2dnx Combine like terms: 2dnx + -2dnx = 0 -21 + -2dn + -2dnx + 4x + x2 = 0 The solution to this equation could not be determined.
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