exam Maths Puzzle Numerical Ability

I have been struggling with this math problem and I was wondering if someone could help me? I would deeply appreciate it!! Please and Thank you!!

Using Several Methods of Factoring
Factor completely
x^2-2x-4y^2-4y

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exam Other Question

i think this is what i'm doing??? but i really need help!!! Is (1,-2) a solution of 3x-4y=12?


Thank you