P preapgirl New member Joined Apr 22, 2010 Messages 7 Jun 1, 2010 #1 i dont really get it i need it step by steb please any one n squared = 35-2n or this one doesnt really matter xsquared + 7x=0
i dont really get it i need it step by steb please any one n squared = 35-2n or this one doesnt really matter xsquared + 7x=0
W wjm11 Senior Member Joined Nov 13, 2004 Messages 1,417 Jun 2, 2010 #2 n squared = 35-2n Click to expand... n^2 = 35 – 2n This is a quadratic equation. Start by getting all terms on one side and zero on the other: n^2 + 2n = 35 – 2n +2n n^2 + 2n = 35 n^2 + 2n - 35 = 35 – 35 n^2 + 2n - 35 = 0 From here you can either solve by factoring or by using the quadratic formula. Let’s use factoring on this one: n^2 + 2n - 35 = 0 (n + 7)(n – 5) = 0 Now we just set the individual factors equal to 0 and solve: n + 7 = 0 n = -7 n – 5 = 0 n = 5 Those are the two solutions to your quadratic equation.
n squared = 35-2n Click to expand... n^2 = 35 – 2n This is a quadratic equation. Start by getting all terms on one side and zero on the other: n^2 + 2n = 35 – 2n +2n n^2 + 2n = 35 n^2 + 2n - 35 = 35 – 35 n^2 + 2n - 35 = 0 From here you can either solve by factoring or by using the quadratic formula. Let’s use factoring on this one: n^2 + 2n - 35 = 0 (n + 7)(n – 5) = 0 Now we just set the individual factors equal to 0 and solve: n + 7 = 0 n = -7 n – 5 = 0 n = 5 Those are the two solutions to your quadratic equation.
