document.write( "Question 209591: 16x+12x=7 quadratic formula \n" ); document.write( "

Algebra.Com's Answer #158469 by Earlsdon(6294) $\"\"$ $\"About$

You can put this solution on YOUR website!
Solve using the quadratic formula: $\"x+=+%28-b%2B-sqrt%28b%5E2-4ac%29%29%2F2a\"$ :
\n" ); document.write( " $\"16x%5E2%2B12x+=+7\"$ Subtract 7 from both sides.
\n" ); document.write( " $\"16x%5E2%2B12x-7+=+0\"$ Here, a = 16, b = 12, and c = -7; Substitute into the formula:
\n" ); document.write( " $\"x+=+%28-12%2B-sqrt%2812%5E2-4%2A%2816%29%2A%28-7%29%29%29%2F2%2816%29\"$ Evaluate.
\n" ); document.write( " $\"x+=+%28-12%2B-sqrt%28144-%28-448%29%29%29%2F32\"$
\n" ); document.write( " $\"x+=+%28-12%2B-sqrt%28592%29%29%2F32\"$
\n" ); document.write( " $\"x+=+-0.375%2B0.76\"$ or $\"x+=+-0.375-0.76\"$
\n" ); document.write( " $\"highlight%28x+=+0.385%29\"$ or $\"highlight%28x+=+-1.135%29\"$ \n" ); document.write( "

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