Use the Quadratic Formula to Solve with Surds.

Question 1:

x2+4x4=0
x=-2±22

Question 2:

x212x6=0
x=6±42

Question 3:

x2+5x6=0
x=1 or -6

Question 4:

x28x+1=0
x=4±15

Question 5:

x2+11x7=0
x=-11±1492

Question 6:

x215x+9=0
x=15±3212