document.write( "Question 820968: [ Find the x-intercept(s) and the coordinates of the vertex for the parabola y = x^2 + 2x - 15 ] \n" ); document.write( "

Algebra.Com's Answer #493813 by TimothyLamb(4379) $\"\"$ $\"About$

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\n" ); document.write( "y = x^2 + 2x - 15
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\n" ); document.write( "the above quadratic equation is in standard form, with a=1, b=2, and c=-15
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\n" ); document.write( "to solve the quadratic equation, by using the quadratic formula, copy and paste this:
\n" ); document.write( "1 2 -15
\n" ); document.write( "into this solver: https://sooeet.com/math/quadratic-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "the two real roots (i.e. the two x-intercepts), of the quadratic are:
\n" ); document.write( "x = 3
\n" ); document.write( "x = -5
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\n" ); document.write( "the vertex is a minimum at: ( -1, -16 )
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\n" ); document.write( "Solve and graph linear equations:
\n" ); document.write( "https://sooeet.com/math/linear-equation-solver.php
\n" ); document.write( "---
\n" ); document.write( "Solve quadratic equations, quadratic formula:
\n" ); document.write( "https://sooeet.com/math/quadratic-formula-solver.php
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\n" ); document.write( "Solve systems of linear equations up to 6-equations 6-variables:
\n" ); document.write( "https://sooeet.com/math/system-of-linear-equations-solver.php \n" ); document.write( "

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