document.write( "Question 936741: Solve the system:
\n" ); document.write( "x^2 +y^2 =289
\n" ); document.write( "2x^2 -y^2 =143
\n" ); document.write( "The solutions will have the form (+-a, +- sqrt b) What is b?\r
\n" ); document.write( "\n" ); document.write( "A. 17
\n" ); document.write( "B. 145
\n" ); document.write( "C. 3
\n" ); document.write( "D. -37
\n" ); document.write( "E. none of these \n" ); document.write( "

Algebra.Com's Answer #570227 by ewatrrr(24785) $\"\"$ $\"About$

You can put this solution on YOUR website!
x^2 +y^2 =289
\n" ); document.write( "2x^2 -y^2 =143
\n" ); document.write( "3x^2 = 432
\n" ); document.write( "x^2 = 144
\n" ); document.write( "x = ą 12 \n" ); document.write( "

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