sqrt(4x ) -10=20 Hello, I got this question an I know the answer is x =225 but I wanted to now what are the restrictions on x, and how do i find them in the future. Thanks
Solve for x:
2 sqrt(x)-10 = 20
Add 10 to both sides:
2 sqrt(x) = 30
Divide both sides by 2:
sqrt(x) = 15
Raise both sides to the power of two:
Answer: | x = 225
I don't understand what you mean by "restrictions". Each question has its own unique solution or solutions, depending on the complexity of the question. In this question, the value of x is simple and straightforward with no restrictions that I can see. You may communicate your thoughts as to what you have in mind.
