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Give three integers: A2, B2 and 2Ab. Choose any two integers to add or subtract, so that the resulting polynomial can be factorized. Please write down your selected formula and factorize. (one is enough)
According to the meaning of the title, A2 + b2-2ab = (a-b) 2
1. Give three integers, X & # 178;, 2x + 1, X & # 178; - 2x, select two integers from them for subtraction and factorization
2. Calculate 9.9 & # 178; + 9.9x0.2 + 0.01=_____
2013²-2012²=_____
Hello: LX & # 178; - 2x - (2x + 1) = x & # 178; - 1 = (x + 1) (x-1) 29.9 & # 178; + 9.9x0.2 + 0.01 = 9.9 & # 178; + 2x9.9x0.1 + 0.01 = (9.9 + 0.1) &# 178; = 100 32013 & # 178; - 2012 & # 178; = (2013 + 2012) (2013-2012) = 4025 if there is anything I don't understand about this question
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