1. Find the solutions of the following equation x2-3x - 40 = 0.
A. -5 and -8
B. 5 and -8
C. -5 and 8
D. 5 and 8
2. Solve for x in the equation x2 + x = 12.
A. 6 and -2
B. -3 and -4
C. - 4 and 3
D. -2 and 6
3. In the equation 2x2 - 2x - 12 = 0, the values of x are?
A. -6 and 2
B. -3 and 4
C. - 4 and 3
D. -2 and 3
4. Find the solutions of the following equation x2 - 5x = 14.
A. 7 and -2
B. -7 and 2
C. 7 and2
D. -7 and -2
5. In the equation 4x2 - 6x + 12 = 0, the solution is?
A. 3
B. 4
C. -3
D. 2
6 Solve for x by extracting square roots, x2= 256
A. 14 and -14
B. 23 and -23
C. 16 and -16
D. 18 and -18
7. By extracting square roots, 2x2=162,
A 7 and -7
B. 9 and -9
C. 9 and-11
D. 11 and -11
8. In the equation 3x2- 12 = 0, the roots are?
A 2 and -2
B. 3 and -3
C. 4 and- 4
D. none of these
9. Solve for x by extracting square roots, 3x2 + 7x = 250.
A 7 and -7
B. 9 and -9
C. 11 and -11
D. 12 and -12
10. In the equation x2 + 7x -120 =0, the solutions are?
A. 12 and -10
B. - 20 and 6
C. 15 and -8
D. 8 and -15
11. In the equation x? + 6x = 16, the roots are?
A 8 and -2
B. -8 and 2
C.-8 and -2
D. 8 and 2​