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<!-- <p>In elementary algebra, the <b>quadratic formula</b> is the solution of the quadratic equation.</p> <p style="text-align: center;"><math xmlns="http://www.w3.org/1998/Math/MathML"><mi>x</mi><mo>=</mo><mfrac><mrow><mo>-</mo><mi>b</mi><mo>±</mo><msqrt><msup><mi>b</mi><mn>2</mn></msup><mo>-</mo><mn>4</mn><mi>a</mi><mi>c</mi></msqrt></mrow><mrow><mn>2</mn><mi>a</mi></mrow></mfrac></math></p> <p><b>Water is made from two elements</b> - Hydrogen and Oxygen. If you put the two gases together, along with energy, you can make water.</p> <p style="text-align: center;"><math class="wrs_chemistry" xmlns="http://www.w3.org/1998/Math/MathML"><mn>2</mn><msub><mi mathvariant="normal">H</mi><mn>2</mn></msub><mfenced><mi mathvariant="normal">g</mi></mfenced><mo>+</mo><msub><mi mathvariant="normal">O</mi><mn>2</mn></msub><mfenced><mi mathvariant="normal">g</mi></mfenced><mo>⇌</mo><mn>2</mn><msub><mi mathvariant="normal">H</mi><mn>2</mn></msub><mi mathvariant="normal">O</mi><mfenced><mi mathvariant="normal">l</mi></mfenced></math></p> <p>The entire formula for the surface area of a cylinder is <math xmlns="http://www.w3.org/1998/Math/MathML"><mn>2</mn><msup><mi>πr</mi><mn>2</mn></msup><mo>+</mo><mn>2</mn><mi>πrh</mi></math></p> -->