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Mathematics
2 December, 02:44
What are the solution (s) x^2-4=0?
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Jazlynn Mora
2 December, 03:01
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X^2 - 4 = 0
x^2 = 4
Square root x^2 and 4
x = 2 and/or x = - 2
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Ali Murray
2 December, 03:08
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Answer: Hello there!
here we have the equation x^2 - 4 = 0 and we want to find the solutions.
The first thing we need to do is isolate the x therm:
x^2 - 4 = 0
x^2 = 4
Now we know that x squared must be equal to 4, now we can apply the square root in both sides of the equation.
√x^2 = ± √4
x = ±2
so here we have two solutions, x = 2 and x = - 2
where the ± appears because the square root has two solutions, 2 and - 2, because 2*2 = 4 and (-2) * (-2) = 4
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