document.write( "Question 202158: Solve using the quadratic formula: 15x^2+7x=2 \n" ); document.write( "

Algebra.Com's Answer #152410 by Earlsdon(6294) $\"\"$ $\"About$

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Solve using the quadratic formula: $\"x+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F2a\"$
\n" ); document.write( " $\"15x%5E2%2B7x+=+2\"$ First subtract 2 from both sides.
\n" ); document.write( " $\"15x%5E2%2B7x-2+=+0\"$ Apply the formula, noting that a = 15, b = 7, and c = -2.
\n" ); document.write( " $\"x+=+%28-7%2B-sqrt%287%5E2-4%2815%29%28-2%29%29%29%2F2%2815%29\"$ Evaluate.
\n" ); document.write( " $\"x+=+%28-7%2B-sqrt%2849-%28-120%29%29%29%2F30\"$
\n" ); document.write( " $\"x+=+%28-7%2B-sqrt%28169%29%29%2F30\"$
\n" ); document.write( " $\"x+=+%28-7%2B13%29%2F30\"$ or $\"x+=+%28-7-13%29%2F30\"$
\n" ); document.write( " $\"highlight%28x+=+0.2%29\"$ or $\"highlight%28x+=+-0.67%29\"$ \n" ); document.write( "

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