1.

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Answer»

\tt 2x {}^{2} - 9x + 7 = 0 \\  \tt {2x}^{2}  - 7x - 2x + 7  = 0\\  \tt x(2x - 7) - 1(2x - 7)  = 0 \\  \tt{(x - 1)(2x - 7)} = 0 \\  \sf{ \therefore \:  \: x = \green{ 1} \:  \:   \:  \: \text{or }\:   \: \:  \green{ 3.5} }



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