L lamps New member Mar 30, 2009 #1 factor it out on two multiples - FOIL it backwards look for two multiples of first and last term in trinomial that will, when arranged properly, give middle term (2x-1)(2x+5) = 0 now set each () =0 to find x 2x-1=0, x=1/2 2x+5=0, x=-5/2
factor it out on two multiples - FOIL it backwards look for two multiples of first and last term in trinomial that will, when arranged properly, give middle term (2x-1)(2x+5) = 0 now set each () =0 to find x 2x-1=0, x=1/2 2x+5=0, x=-5/2
R robtai18 New member Mar 30, 2009 #2 hi, I am trying to solve this equation: 4x^2+8x-5=0 How would you solve this. What do you do with the 4x^2 ? Help would be appreciated, have test just now. Thanx
hi, I am trying to solve this equation: 4x^2+8x-5=0 How would you solve this. What do you do with the 4x^2 ? Help would be appreciated, have test just now. Thanx
R ronnyboi08 Guest Mar 30, 2009 #3 if all else fails, simply use the quadratic equation formula which is: x= -b +/-the square root of b^2 - 4ac/2a where AX2 + BX + C = 0
if all else fails, simply use the quadratic equation formula which is: x= -b +/-the square root of b^2 - 4ac/2a where AX2 + BX + C = 0
