Quadratic Equations
Quadratic Formula:
x = | |
2a |
Solve by factoring (if possible) or by the quadratic formula.
x2 = 8x
x2+5x-14 = 0
x2-24 = 5x
6x2-7x-5 = 0
12x2-x-6 = 0
x(x-7) = -10
5x2+6x-10 = 0
x2-2x-8 = 0
9x2-25 = 0
2x2+12x = -18
2x2+9x+3 = 0
Answers: 1. {0,8} 2. {-7,2} 3. {8,-3} 4. {-1/2, 5/3} 5. {-2/3, 3/4} 6. {2,5}
7. {-3/5 /5} 8. {4,-2} 9. {-5/3, 5/3} 10. {-3} 11. {-9/4 /4} 12. {-5,3}