document.write( "Question 598781: what Quadratic stand for \n" ); document.write( "

Algebra.Com's Answer #378703 by KMST(5328) $\"\"$ $\"About$

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Quadratic is what we call polynomials expressions, or functions of degree 2, like
\n" ); document.write( " $\"x%5E2%2B5x-3\"$ or $\"f%28x%29=x%5E2-64\"$ or $\"y=x%5E2\"$ or $\"%281%2F2%29k%5E2-2k%2B1\"$ .
\n" ); document.write( "All those expressions have a variable squared. It may be multiplied by a number and there may be other terms added.
\n" ); document.write( "We call functions like $\"f%28x%29=x%5E2-64\"$ or $\"y=x%5E2\"$ quadratic functions.
\n" ); document.write( "We call the expressions like $\"x%5E2%2B5x-3\"$ , $\"x%5E2-64\"$ , $\"x%5E2\"$ , $\"%281%2F2%29k%5E2-2k%2B1\"$ quadratic polynomials.
\n" ); document.write( "When one of those expressions is set as equal to zero, we have a quadratic equation, like
\n" ); document.write( " $\"8x%5E2%2B13x-6=0\"$
\n" ); document.write( "Sometimes we call that just a quadratic for short. \n" ); document.write( "

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