9514 1404 393
1a. -4, 3/4
1b. 1-0.71i, 1+0.71i
Step-by-step explanation:
The directions tell you to use the quadratic formula. Factoring may get you the solution somewhat more easily, but does not comply with the directions.
The quadratic formula tells you ...
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1a. a=4, b=13, c=-12
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1b. After adding 3 to both sides, a=2, b=-4, c=3