Practice Final Exam
d) √(t + 8) + √t = 5
√(t + 8) = - √t + 5
√(t + 8) = (5 - √t )
(√(t + 8))
2
= (5 - √t )
2
t + 8 = 25 - 10√t + t
t - t + 8 - 25 = - 10√t
- 17 = - 10√t
(- 17)
2
= (-10√t)
2
289 = 100t
289/100 = t
return