document.write( "Question 391034: find the zeros of f(x)=x^2+7x+9 by using quadratic formula \n" ); document.write( "

Algebra.Com's Answer #277378 by checkley79(3341) $\"\"$ $\"About$

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f(x)=x^2+7x+9
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( "x=(-7+-sqrt[7^2-4*1*9])/2*1
\n" ); document.write( "x=(-7+-sqrt[49-36])/2
\n" ); document.write( "x=(-7+-sqrt13)/2
\n" ); document.write( "x=(-7+-3.6)/2
\n" ); document.write( "x=(-7+3.6)/2
\n" ); document.write( "x=-3.4/2
\n" ); document.write( "x=-1.7 ans.
\n" ); document.write( "x=(-7-3.6)/2
\n" ); document.write( "x=-10.6/2
\n" ); document.write( "x=-5.3 ans. \n" ); document.write( "

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