Q: Find all real square roots of 0.0036?

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( +0.063246 ) and ( -0.063246 ).These numbers are rounded.These are the only square roots of 0.004. There are no more real ones,and no imaginary or complex ones.

0.0625 has a grand total of 2 square roots, and they're both real. They are +0.25 and -0.25

sqrt(0.0004) = +/- 0.02. Try calculating (+0.02)^2 and (-0.02)^2 by hand to convince yourself that both are real roots of 0.0004. ================

The two square roots of 400 are: 20 and -20.

0.018973665961 -0.018973665961

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( +0.063246 ) and ( -0.063246 ).These numbers are rounded.These are the only square roots of 0.004. There are no more real ones,and no imaginary or complex ones.

-1.1402 and 1.1402, approx.

There are no real square roots of -256. But using complex numbers the square roots of -256 are 16i and -16i.

0.0625 has a grand total of 2 square roots, and they're both real. They are +0.25 and -0.25

There are two roots, both real: -13 and +13

The square roots of any positive real number are a positive and a negative real number. The square roots of any negative real number are a positive and a negative imaginary number. The square roots of any imaginary number or any complex number are two complex numbers.

sqrt(0.0004) = +/- 0.02. Try calculating (+0.02)^2 and (-0.02)^2 by hand to convince yourself that both are real roots of 0.0004. ================

The two square roots of 400 are: 20 and -20.

They are called real numbers. Negative square roots must be complex numbers.

Negative numbers have no real square roots.-144 has two square roots: 12i and -12i.

The short answer is "Nothing". In the complex domain, the number of nth roots of any real number is n. Every non-negative real number has 2 square roots. Every real number has 3 cube roots. Every non-negative real number has 2 real square roots and 2 imaginary ones. and so on. So what?

No. Negative numbers are real but their square roots are not.