What is the answer to sqrt(x^2+9)=4 ?

The answer to sqrt(x^2+9)=4 is x=sqrt(7),x=-sqrt(7)

Solve for x: sqrt(x^2+9)=4

The solution is x=sqrt(7),x=-sqrt(7)

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Popular >

x^{2} + 9 = 4

x = 7, x = - 7

Decimal Notation

x = 2.64575 \dots, x = - 2.64575 \dots

Solution steps

x^{2} + 9 = 4

Square both sides:

x^{2} + 9 = 16

x^{2} + 9 = 16

Solve

x^{2} + 9 = 16 : x = 7, x = - 7

x = 7, x = - 7

Verify Solutions:

x = 7

True

, x = - 7

True

The solutions are

x = 7, x = - 7

x (x + 1) = 0

x + 7 = x

5 x + 15 = 5

3 - x + 1 = x + 2

x + 7 = 8

What is the answer to sqrt(x^2+9)=4 ?
The answer to sqrt(x^2+9)=4 is x=sqrt(7),x=-sqrt(7)
Solve for x: sqrt(x^2+9)=4
The solution is x=sqrt(7),x=-sqrt(7)