answer.me

4x + 9 = 12*sqrt(x)
16x ² + 72x + 81 = 144x
16x ² - 72x + 81 = 0
Now it's a quadratic equation, and you can solve it with the simplified formula.

(a+b+c)²is.not....a²+b²+c².....its.(a+b+c)*(a+b+c)

it's true .thank.you.but.i.have.a.rule........ax+bsqrt(x)+c=0
x1=(b²-b*sqrt(Δ))/2(a)²-c/a
x2=(b²+b*sqrt(Δ))/2(a)²-c/a
Δ=b²-4ac

[input][/input]

[input]4x-12sqrt(x)+9=0[/input]