Solve the following quadratic equation by completing the square 0=x^2-4x-5

(x-1) (x-5)

Step-by-step explanation:

x^2-(5-1)x-5

x^2-5x+x-5

x(x-5)+1(x-5)

(x-1) (x-5)

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

x is the total time in minutes for the free response

you are given number of questions as 15 - m and time per item as 8 minutes

to find x multiply the two givens together:

x = 8 * (15-m) = 8(15-m)