SOLUTION: Solve for x: 2x+7[sqrt(x)]-15=0
Algebra
->
Radicals
-> SOLUTION: Solve for x: 2x+7[sqrt(x)]-15=0
Log On
Algebra: Radicals -- complicated equations involving roots
Section
Solvers
Solvers
Lessons
Lessons
Answers archive
Answers
Click here to see ALL problems on Radicals
Question 1017937
:
Solve for x: 2x+7[sqrt(x)]-15=0
Answer by
CubeyThePenguin(3113)
(
Show Source
):
You can
put this solution on YOUR website!
Let sqrt(x) = a.
2a^2 + 7a - 15 = 0
(2a-3)(a+5) = 0
a = 3/2 and a = -5.
One solution is extraneous: (a cannot be negative)
a = 3/2, so x = 9/4