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Please solve equation
-3x2+243=0

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Suggested Answer

Answer is 9.-3x^2 + 243 = 0Bring 243 to the right.-3x^2 = -243Divide by -3.x^2 = 243/3 = 81Tak the square root of both sides.x = 81^1/2 = 9.

Suggested Answer

[tex]-3x^2+243=0\\
\\
-3x^2=-243\\
\\
x^2=\frac{-243}{-3}\\
\\
x^2=81\\
\\
x=\pm\sqrt{81}\\
\\
\boxed{x=\pm9}[/tex]

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