What is the answer to sqrt(400)=sqrt(81)+sqrt(n) ?

The answer to sqrt(400)=sqrt(81)+sqrt(n) is n=121

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

sqrt(400)=sqrt(81)+sqrt(n)

400 = 81 + n

n = 121

Solution steps

400 = 81 + n

Expand

81 + n : 9 + n

400 = 9 + n

Switch sides

9 + n = 400

Factor the number:

400 = 2 0^{2}

9 + n = 2 0^{2}

Apply radical rule:

2 0^{2} = 20

9 + n = 20

Move

9

to the right side

n = 11

Square both sides:

n = 121

n = 121

Verify Solutions:

n = 121

True

The solution is

n = 121

2 v + 2 = 5 v - 16

2 x - 3 + 3 = 2 x

2 x + 1 - 3 x + 6 = 0

n (x) = 20 - x

x + 4 + 8 = x + 6

What is the answer to sqrt(400)=sqrt(81)+sqrt(n) ?
The answer to sqrt(400)=sqrt(81)+sqrt(n) is n=121
Solve for n: sqrt(400)=sqrt(81)+sqrt(n)
The solution is n=121