Question

Solutions for 12 – x2 = 0?

Answer 1

Answer: x = ± 2 √3 ; or, write as: x = ± 3.464 .
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Given: 12 – x² = 0 ;

Multiply BOTH side by "-1" ;
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-1 (12 – x² = 0) ;

to get:

-12 + x² = 0 ;

Rewrite as:

x² - 12 = 0 ;

Add "12" to both sides; to get:

x² = 12

Take the square root of each side:

√(x²) = ±√(12)

x = ± √(12)
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√(12) = √(4) * √(3) = 2 √(3)

√(12) = 3.4641016151377546 ; round to: 3.464 .
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x = ± √(12) ;
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x = ± 2 √3 ; or, write as: x = ± 3.464 .
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