If you are looking for the zeros of this function: x = -2 plus or minus 2 X the square root of 5.
x equals negative b plus or minus the square root of b squared minus 4bc over 2a
-cos2(x)1 = sin2(x) +cos2(x)1 - cos2(x) = sin2(x)-cos2(x) = sin2(x) - 1
6 squared = 3 squared + x squared if x is the height (altitude) of the triangle 36 = 9+x squared x squared =27 so x = 3 sqrt3 = 5.19615
Without an equality sign it can not be considered to be an equation and the - or + value of 9x has not been given
(x + 12)(x - 3)
(9x + 8)(9x - 8)
(x + 3)(3x - 2)
x2-9x+8=0 has two solutions:x = 8x = 1
(x + 2)(3x - 1)(3x + 1)
x2 - 9x + 20 = (x - 4)( x - 5)
It is: (x-2)(x-7) when factored
5x2 + 9x + 13 has no real factors.
x2 - 9x + 8 = (x-1)(x-8)
9x2 + 27x - 36 = 9(x2 + 3x - 4) = 9(x + 4)(x - 1)
x = -2/3,7/6
-9(x + 8)