document.write( "Question 270625: three times the square of a number plus 10 is 85.Find the number. \n" ); document.write( "
Algebra.Com's Answer #198231 by rfadrogane(214) You can put this solution on YOUR website! Let: x - be the number \n" ); document.write( " ^ - means raised\r \n" ); document.write( "\n" ); document.write( " 3x^2 + 10 = 85 \n" ); document.write( " 3x^2 = 85 - 10 \n" ); document.write( " 3x^2 = 75 --divide by 3 on both side \n" ); document.write( " x^2 = 25 -- take the sq. root on both side\r \n" ); document.write( "\n" ); document.write( " x = +5 and -5 ----answers \n" ); document.write( " \n" ); document.write( " |