factorise: x-2y-x^2+4y^2
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Answered by
16
Eun01:
selamat belajar
Answered by
2
x−2y−x
2
+4y
2
x−2y−(x
2
+(2y)
2
)
we know that a
2
−b
2
=(a+b)(a−b)
x−2y−[(x+2y)(x−2y)]
Take out common in all terms,
(x−2y)(1−(x+2y))
(x−2y)(1−x−2y)
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