Solve sqrt(2x+8) = x

Marley Mcbride

Marley Mcbride

Answered question

2023-03-23

Solve 2 x + 8 = x

Answer & Explanation

Mareli Blackburn

Mareli Blackburn

Beginner2023-03-24Added 8 answers

You square both sides so that 2 x + 8 = x 2 to eliminate the square root on the right.
Then move 2x+8 to the left until 0 = ( x 2 ) - 2 x + 8 is obtained.
You may now use the quadratic formula to obtain the zeroes for -2x+8.
Tiffany Griffin

Tiffany Griffin

Beginner2023-03-25Added 4 answers

2 x + 8 = x
2 x + 8 = x 2
0 = x 2 - 2 x - 8
0 = ( x - 4 ) ( x + 2 )
x + 2 = 0 x = - 2 (not an answer)
x - 4 = 0 x = 4 (answer)

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