Use the Quadratic Formula to Solve with Surds.

Question 1:

x27x8=0
x=8 or -1

Question 2:

x2+11x2=0
x=-11±1292

Question 3:

x2+3x9=0
x=-3±352

Question 4:

x211x+8=0
x=11±892

Question 5:

x2+3x1=0
x=-3±132

Question 6:

x2+14x3=0
x=-7±213