Solve the radical expression. check your solution. \[ \sqrt{2-x} =x\]

The given radical expression is

Squaring on both the sides of the equation, we get

Bringing all the variables and constant to the right side of the expression, so we get:

By comparing the above expression with the standard form

we get a=1, b=1 and c= -2

Discrimant(D) =

Discrimant(D)=

D=9

x= -1 and 2 are the required solutions of the given radical expression.

1. 22

2. 1

3. 7

4. 18

step-by-step explanation

e2020 got it right

fist on the left goes with the third on the right. second on the left goes with the fourth on the right. third on the left goes with the second on the right. the fourth on the left goes with first on the right