Question

3x square minus x minus 140 = 0 split the middle term solution

Answer 1

Hope u like my process
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$= > 3 {x}^{2} - x - 140 = 0 \\ \\ = > 3 {x}^{2} - 21x + 20x - 140 = 0 \\ \\ = > 3x(x - 7) + 20(x - 7) = 0 \\ \\ = > (3x + 20)(x - 7) = 0 \\ \\ \bf \underline{ \: \: \: \: \: either \: \: \: \: \: \: \: } \\ \\ = > 3x + 20 = 0 \\ \\ = > \bf x = \underline{ - \frac{20}{3} } \\ \\ \bf \: \underline{ \: \: \: \: \: \: \: or \: \: \: \: \: \: \: \: } \\ \\ = x - 7 = 0 \\ \\ = > \bf x = \underline7$
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