document.write( "Question 150881: Factor 4^2+7x-2 and 16y^2=25, algebra is the worst thing ever, who understands those numbers and letters put together must be a genius! \n" ); document.write( "
Algebra.Com's Answer #110799 by stanbon(75887) ![]() You can put this solution on YOUR website! Factor 4x^2+7x-2 \n" ); document.write( "Using the AC Method of factoring: \n" ); document.write( "Think of two numbers whose product is AC = 4*-2 = -8 \n" ); document.write( "and whose sum = B = 7 \n" ); document.write( "------------------ \n" ); document.write( "The numbers are +8 and -1 \n" ); document.write( "----------------- \n" ); document.write( "Rewrite the problem, substituting 8x-x in place of 7x: \n" ); document.write( "4x^2+8x-x-2 \n" ); document.write( "Factor the 1st two and the last two terms separately to get: \n" ); document.write( "4x(x+2)-(x+2) \n" ); document.write( "Factor again to get the final answer: \n" ); document.write( "(x+2)(4x-1) \n" ); document.write( "-------------------------- \n" ); document.write( "Factor 16y^2=25 \n" ); document.write( "Rewrite: 16y^2-25 = 0 \n" ); document.write( "This is the \"difference of squares\" form. \n" ); document.write( "Factor: \n" ); document.write( "(4y-5)(4y+5) \n" ); document.write( "---------------------------- \n" ); document.write( "Comment: You are not the 1st person to have difficulty \n" ); document.write( "with algebra. Find a good teacher/tutor and work hard \n" ); document.write( "and you will learn. You have to decide whether it is \n" ); document.write( "worth the effort. \n" ); document.write( "---------------------------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |