en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

x+3=sqrt(2x+21)

Solution

x + 3 = 2 x + 21

Solution

x = 2

Solution steps

x + 3 = 2 x + 21

Square both sides:

x^{2} + 6 x + 9 = 2 x + 21

x^{2} + 6 x + 9 = 2 x + 21

Solve

x^{2} + 6 x + 9 = 2 x + 21 : x = 2, x = - 6

x = 2, x = - 6

Verify Solutions:

x = 2

True

, x = - 6

False

The solution is

x = 2

Popular Examples

4+sqrt(x-1)=x+3

4 + x - 1 = x + 3

2 + x = x

sqrt(3x+16)=x+2

3 x + 16 = x + 2

7 x - 7 = x - 1

sqrt(2x+3)+sqrt(x-5)=0

2 x + 3 + x - 5 = 0

Frequently Asked Questions (FAQ)

What is the answer to x+3=sqrt(2x+21) ?
The answer to x+3=sqrt(2x+21) is x=2
Solve for x: x+3=sqrt(2x+21)
The solution is x=2