document.write( "Question 73415This question is from textbook Algebra 1
\n" ); document.write( ": what is y=-X2+2x+3 \n" ); document.write( "

Algebra.Com's Answer #52531 by jim_thompson5910(35256) $\"\"$ $\"About$

You can put this solution on YOUR website!
If you're solving for x, then
\n" ); document.write( " $\"0=-x%5E2%2B2x%2B3\"$ Let y=0 and factor out a -1
\n" ); document.write( " $\"0=-%28x%5E2-2x-3%29\"$ Factors to
\n" ); document.write( " $\"0=-%28x%2B1%29%28x-3%29\"$ Here's the product of factors
\n" ); document.write( " $\"x%2B1=0\"$ Set each factor equal to zero
\n" ); document.write( " $\"x=-1\"$ Here's one answer
\n" ); document.write( " $\"x-3=0\"$
\n" ); document.write( " $\"x=3\"$ Here's another answer
\n" ); document.write( " $\"graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+-x%5E2%2B2x%2B3%29\"$
\n" ); document.write( "Hope that helps \n" ); document.write( "

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