SOLUTION: Solve the equation. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.)
(3)(sqrt 4x − 7) + 2 = (sqrt 9 − x)= 17
<img src
Algebra ->
Radicals
-> SOLUTION: Solve the equation. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.)
(3)(sqrt 4x − 7) + 2 = (sqrt 9 − x)= 17
<img src
Log On
Question 906578: Solve the equation. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.)
(3)(sqrt 4x − 7) + 2 = (sqrt 9 − x)= 17
The answers I got: (8,851/100), (97/10), and (-19/4) all came up incorrect on my homework. Found 2 solutions by Theo, Edwin McCravy:Answer by Theo(13342) (Show Source):
Let one of the square roots equal to a letter
Let
Then we have:
Isolate the remaining radical term on the left
Square both sides:
Now since ,
Isolate the square root term:
Divide through by 4
Square both sides:
That may factor, but it would take longer to
factor it than to use the quadratic formula,
so I'll just use the quadratic formula:
Using the +
Using the -
So the solutions are and
But we must check to see if they are really solutions:
checking
checking
They both check.
Edwin