document.write( "Question 137130: Solve the equation by the method of your choice.\r
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document.write( "(4x+6)squared = 25 \n" );
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Algebra.Com's Answer #100335 by MORUPHOSUOLALE(24)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "(4x+6)squared = 25\r \n" ); document.write( "\n" ); document.write( " Rememeber (4x+6)squared means (4x+6)(4x+6) \n" ); document.write( "Therefore the equation becomes - \n" ); document.write( "(4x+6)(4x+6)= 25 \n" ); document.write( "16x^2 + 24x + 24x +36 = 25 \n" ); document.write( "16x^2 +48x+ 36 = 25 \n" ); document.write( "16x^2 +48x+ 36-25= 0 (collecting like terms) \n" ); document.write( "16x^2 +48x+11= 0\r \n" ); document.write( "\n" ); document.write( "Then we can solve this equation either by factorization, completing the square method or the almighty fomulae.\r \n" ); document.write( "\n" ); document.write( "I will choose factorization. \n" ); document.write( "How do we know which method to use! \n" ); document.write( "Actually by looking at the equation u will be able to tell which of these methods can be applied to solve the equation if u know the fundamentals of those methods.Usually I like to choose factorization first because it is the most easy an uncomplicated method compare to other two methods. \n" ); document.write( "If u can use factorization for any equation that tells you that other two methods can also get the solution to the equation. \n" ); document.write( "However, a factorisation might not be powerful enough to untangle some hard equations but completing the square or the almighty fomulae will solve those equation.\r \n" ); document.write( "\n" ); document.write( "So lets coem back to our task- \n" ); document.write( "By using factorisation. \n" ); document.write( "16x^2 +48x+11= 0 \n" ); document.write( "(4x+1)(4x+11)= 0\r \n" ); document.write( "\n" ); document.write( "Therefore-\r \n" ); document.write( "\n" ); document.write( "4x+1=0 OR 4x+11= 0\r \n" ); document.write( "\n" ); document.write( "x= -(1/4) OR x = -(4/11).\r \n" ); document.write( "\n" ); document.write( "Good luck!\r \n" ); document.write( "\n" ); document.write( "Moruph Osuolale \n" ); document.write( "mosuolal@uncc.edu \n" ); document.write( " |