Asked by Maria1
x^2 + 14x - 4 = 0 Solve please?
Answers
Answered by
Anonymous
factor or use quadratic formula i prefer factoring but somethings cant be factor
like this one you cant factor it so use quadratic formula
-b plus or minus the square root of (b^2 -4AC) all of that divided by 2A
A= 1(bc of the 1 in front of the x^2)
b= 14( from the 14x)
C=-4
like this one you cant factor it so use quadratic formula
-b plus or minus the square root of (b^2 -4AC) all of that divided by 2A
A= 1(bc of the 1 in front of the x^2)
b= 14( from the 14x)
C=-4
Answered by
Reiny
I would complete the square..
(I use this method when the coefficient of the square term is 1 and the middle term is even)
x^2 + 14x + 49 = 4 + 49
(x+7)^2 = 53
x +7 = ±√53
x = -7 ± √53
(I use this method when the coefficient of the square term is 1 and the middle term is even)
x^2 + 14x + 49 = 4 + 49
(x+7)^2 = 53
x +7 = ±√53
x = -7 ± √53
Answered by
Anonymous
oh man i forgot about that method completely lol
Answered by
Reiny
It has the advantage over the formula in that it gives you the reduced form of the square root answer right away, while often the answer from the formula has to be simplified.
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