What is the answer to sqrt(4(x^2-1))-2sqrt(15)=0 ?

The answer to sqrt(4(x^2-1))-2sqrt(15)=0 is x=4,x=-4

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sqrt(4(x^2-1))-2sqrt(15)=0

4 (x^{2} - 1) - 215 = 0

x = 4, x = - 4

Solution steps

4 (x^{2} - 1) - 215 = 0

Move

215

to the right side

4 (x^{2} - 1) = 215

Square both sides:

4 x^{2} - 4 = 60

4 x^{2} - 4 = 60

Solve

4 x^{2} - 4 = 60 : x = 4, x = - 4

x = 4, x = - 4

Verify Solutions:

x = 4

True

, x = - 4

True

The solutions are

x = 4, x = - 4

x = 3 + x - 1

2 x + 49 = 7 - 5 x

x^{3} - 5 x - 1 = 0

x = 0.5

4 - x + 1 + x = 3

What is the answer to sqrt(4(x^2-1))-2sqrt(15)=0 ?
The answer to sqrt(4(x^2-1))-2sqrt(15)=0 is x=4,x=-4
Solve for x: sqrt(4(x^2-1))-2sqrt(15)=0
The solution is x=4,x=-4