1.

Choose the factors of \[{{x}^{4}}-13{{x}^{2}}{{y}^{2}}+36{{y}^{4}}\] from the following.

A.  \[(x+4y),(x-4y),(x+2y)\]and \[(x-2y)\]
B.  \[({{x}^{2}}+2x-8)\] and \[({{x}^{2}}+2x-3)\]
C.  \[(x+3y),(x-3y),(x+2y)\]and \[(x-2y)\]
D.  \[({{x}^{2}}-2x-8)\] and \[({{x}^{2}}+2x+3)\]
Answer» D.  \[({{x}^{2}}-2x-8)\] and \[({{x}^{2}}+2x+3)\]


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