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\[{x}^{2}=16\]
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x^2=16
x^2=16
{x}^{2}=16
1
Take the square root of both sides.
x
=
±
16
x=\pm \sqrt{16}
x
=
±
1
6
2
Since
4
×
4
=
16
4\times 4=16
4
×
4
=
1
6
, the square root of
16
16
1
6
is
4
4
4
.
x
=
±
4
x=\pm 4
x
=
±
4
Done
x=4,-4
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