a: =(x-6y)(x+6y)-(x-6y)
=(x-6y)(x+6y-1)
c: \(=2\left(x^2-2xy+y^2-9\right)\)
\(=2\left(x-y-3\right)\left(x-y+3\right)\)
e: \(=x^4-6x^2+5x^2-30=\left(x^2+5\right)\left(x^2-6\right)\)
A 2 ( y - x )2
C 2 (y - x - 3 ) (y -x + 3)
E, X = \(-\) \(\sqrt{6}\)
X = \(\sqrt{6}\)
X = \(-\) \(\sqrt{5i}\)
X = \(\sqrt{5i}\)
G,(2 y2 - 3xy - x 2 )(2y 2 + 3xy -x2)
i , X = \(\sqrt{2i}\) + 1
X = 1 - \(\sqrt{2i}\)