x^2 - 6x + 6 = 0 Quadratic formula give (6 +/- sqrt(36 - 24))/2 ie 3 +/- (sqrt 12)/2 = 3 +/- 3.464/2 = 3 +/- 1.732 = 4.732 or 1.268
I'll do ya one better - 12 plus 8 equals what?
x=5.54x+1= 2x+12-1 -14x=2x+11-2x -2x2x=11/2 /2x=5.5
Solving these simultaneous equations by the elimination method:- x = 1/8 and y = 23/12
-5x + 13 = -12 -5x = -12 - 13 = -25 x = -25/-5 = 5
-2x2 + 9x - 12 = 0Then apply the quadratic formula.
x = - 4 - or + the square root of 3 Solved by using the quadratic equation formula.
If: x2+x = 12 Then: x2+x-12 = 0 And using the quadratic formula: x = -4 or x = 3
It is a quadratic equation and the values of x are: -1/2 and 6
x2+10x+1 = -12+2x x2+10x-2x+1+12 = 0 x2+8x+13 = 0 Solving by using the quadratic equation formula: x = - 4 - or + the square root of 3
It is a quadratic equation in X, with two real roots.
Using the discriminant for a quadratic equation the value of k works out as plus or minus 12.
Taking the equation to be y=ax2 + bx +c , and using the formula x = -b plus/minus sqrt (b2-4ac), all over 2a: x = (-3+21)/12 or (-3-21)/12 so x = 1.5 or -2
x2 + 24x +180 = 0 By using the quadratic equation, you can find that x = -12 + 6i or x = -12 - 6i
x=(6±sqrt(36-4*6))/2 x=3±(sqrt(12)/2) x=3±sqrt(3)
Use the quadratic equation: x = (-b plusminus root(b2 - 4ac)) / 2aIn this case, a = 1, b = 9, c = 12.Another answer:x2+9x+12 = 0When factorised by means of the quadratic equation formula:(x+7.372281323)(x+1.627718677) = 0Therefore the roots are: -7.372281323 and -1.627718677Check that your answer is correct by multiplying out the brackets which should bring you back to x2+9x+12 = 0
If you're solving for b, then you use the quadratic formula to factor out b. In this case, b= -1/4 or -18/12