The answer to your question above, I will just illustrate it down. sqrt(3 x +7 ) = 1 - sqrt(x + 2 ) square both sides: 3x + 7 = 1 -2sqrt(x = 2) + x + 2 Then it would become like this, 2x + 4 = -2sqrt( x + 2 ) Divide both sides by -2 to eliminate the -2 on the left side with sqrt. Then square both sides: x^2 + 4x + 4 = x + 2 x^2 + 3x + 2 = 0 (x + 2) (x + 1) = 0 x=-2, -1 there is no sqrt for-1 so the answer is -2
