Part 2 of homework set.

Question

6. Solve the quadratic using the quadratic formula.
2x^2+5x+9=0
7. Find the discriminant. Then determine the number and types of solutions.
2x^2+3x-18=0
8. Simplify
Root -27
9. Simplify 8/(3+2i)

Answer 1

#6. Surely by now you can do this...
#7. b^2-4ac = 9+4*2*18
#8. 3√-3 = 3√3 i
#9. Multiply top and bottom by conjugate:

8(3-2i)/13

Answer 2

Again thanks.