CONCEPT PREVIEW Use choices A–D to answer each question.
A. 3x² - 17x - 6 = 0
B.(2x + 5)² = 7
C. x² + x = 12
D. (3x - 1) (x - 7) = 0
Which quadratic equation is set up for direct use of the square root property? Solve it.
Solve the given quadratic equation using the quadratic formula.
3x2+4x+1=0
x=3,x=−1
x=−31,x=−1
x=−3,x=−1
x=31,x=−1