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Romashka-Z-Leto [24]
3 years ago
14

Solve by factoring: 2x2 - 5x - 12 = 0

Mathematics
2 answers:
Mumz [18]3 years ago
8 0

Answer:

2 {x}^{2}  - 5x - 12 = 0 \\ 2 {x}^{2}  - 8x + 3x - 12 = 0 \\ 2x(x - 4)3(x - 4) = 0 \\ \\  2x + 3 = 0 \\ 2x = 0 - 3 \\  \frac{2x }{2}  =  \frac{ - 3}{2}  \\ x =  \frac{ - 3}{2}  \\  \\ x - 4 = 0 \\ x = 0 + 4 \\ x = 4

Zepler [3.9K]3 years ago
5 0

Step-by-step explanation:

2 {x}^{2}  - 5x - 12

2 {x}^{2}   - 8x  + 3x - 12

2x(x - 4) + 3(x - 4)

2x  + 3 = 0 \:  \: x - 4 = 0

x =  \frac{ - 3}{2}  \:  \: x =4

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