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Nataliya [291]
3 years ago
10

Help me answer this please

Mathematics
1 answer:
Ber [7]3 years ago
6 0

66 = (2x - 1) \times (x - 1) \\ 66 = 2 {x}^{2}  - 3 + 1 \\ 65 - 2 {x}^{2}  + 3x = 0 \\  - 65 + 2 {x}^{2}  - 3x = 0 \\ 2 {x}^{2}  + 10x - 13x - 65 = 0 \\ 2x \times (x + 5) - 13 \times (x + 5) = 0 \\ (x + 5) \times (2x - 13) = 0 \\  \\ x + 5 = 0 \\ 2x - 13 = 0 \\  \\ x =  - 5 \\ x =  \frac{13}{2}  \\  \\
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