Answer:
4 and -3
Step-by-step explanation:
2x²-x²-4x+3x=12
x²-x-12=0
[tex]x = \frac{1 + - \sqrt{ {1}^{2} - 4 \times ( - 12 )\times 1 } }{2 \times 1} [/tex]
[tex]x = \frac{1 + - 7}{2} [/tex]
x1= 4 and x2= -3
