I need help on my quiz

Mathematics 301 Quiz 1.1 - TS Kim solved the equation x - Vx + 10 = 2 as follows. x - J x + 10 8. x- vx+ 10=2 6 - J6+10 x - 2 = vx+10 6 - 16 x2 - 4x +4 = x+10 6 - 4 x2- 5x - 6= 0 e = e (x - 6)(x+1)=0 x = 6, - 1 The extraneous root(s) introduced by Kim is/are A. B. 6 C . - 1 and 6 D. no extraneous root was introduced when verified. Hint: Recall that extraneous roots are found algebraically, but do not satisfy the equation 9. The time, t seconds, it takes a pendulum to complete one back and forth swing can be determined by the equation t = 0.32 v 1 , where I is the length of the pendulum in inches. swing. Determine the length of the pendulum if it takes 1.3 s to make a complete back and forth A. 2.02 in B . 2.03 in C. 4.06 in D. 16.50 in Hint: Rearrange the formula to find the value of