simplify (x – 2y) (x + 2y) - (2x - y) (2x+y)
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(х — 2y) (x + 2y) - (2 х- у) (2x+y)
(x)2-(2y)2- [(2x)2-(y)²]
x2-4y2-[4x2-y21
x2-4y2-4x2+y²
-3x2-3y2
-3(x2+y2)
Answered by
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Answer:
(x – 2y) (x + 2y) - (2x - y) (2x+y)
(x)²-(2y)²- [(2x)²-(y)²]
x²-4y²-[4x²-y²]
x²-4y²-4x²+y²
-3x²-3y²
-3(x²+y²)
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