document.write( "Question 1061503: Solve the following equation by first doing a substitution to make it a quadratic.\r
\n" ); document.write( "\n" ); document.write( "(x+7)^2 + 5(x+7) -50=0 \n" ); document.write( "

Algebra.Com's Answer #676295 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
I could say:
\n" ); document.write( " $\"+x+%2B+7+=+z+\"$
\n" ); document.write( "then:
\n" ); document.write( " $\"+z%5E2+%2B+5z+-+50+=+0+\"$
\n" ); document.write( "By looking at this I see:
\n" ); document.write( " $\"+%28+z+%2B+10+%29%2A%28+z+-+5+%29+=+0+\"$
\n" ); document.write( " $\"+z+=+-10+\"$
\n" ); document.write( " $\"+z+=+5+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+x+%2B+7+=+z+\"$
\n" ); document.write( " $\"+x+%2B+7+=+-10+\"$
\n" ); document.write( " $\"+x+=+-17+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+x+%2B+7+=+5+\"$
\n" ); document.write( " $\"+x+=+-2+\"$
\n" ); document.write( "----------------------
\n" ); document.write( "Here's the plot:
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