document.write( "Question 392830: using your calculator find the one real possitive solution to the equation x^3+5x^2-7=0 round oyur answer to the nearest hundreth \n" ); document.write( "
Algebra.Com's Answer #278859 by richard1234(7193)![]() ![]() You can put this solution on YOUR website! Always helps to graph the polynomial so you know what you're looking at. We have the graph:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The positive real solution appears to be approximately 1, so if you have a TI calculator, use nsolve:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "nsolve(x^3 + 5x^2 - 7 = 0, x, 1)\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Another way you could solve it using a calculator is via Newton's Method, which uses a recursive sequence to approximate the zero. \n" ); document.write( " |