(in 2.2 x 2.2 - 2 * 2.2 x 0.2 + 0.2 x 0.2
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Answer:
4
Step-by-step explanation:
a×a - 2×a ×b +b×b
a^2-2×a×b+b×b
a^2-2ab+b^2
(a+b)^2
(2.2-0.2)^2
(2)^2
4
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