Which of the following are solutions to the quadratic equation below? x^2+7x-8=0

x=1, −8

Step-by-step explanation:

Use the quadratic formula to find the solutions.

(−b±√b²−4(ac))/2a

Substitute the values a=1 , b=7, and c=−8 into the quadratic formula and solve for x.

(−7±√7²−4⋅(1⋅−8))/2⋅1

Simplify. x=(−7±9)/2

The final answer is the combination of both solutions. x=1,−8

s

step-by-step explanation:

7 ft 6 in means 7 1/2, because 6 in is 1/2 of a foot. 7 ft 8 in means 7 2/3 because 8 in is 2/3 of a foot. 23/3 = 7 2/3. 15/2 = 7 1/2.

23/3   *   15/2   = 57 1/2

step-by-step explanation: