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Shanghai Education Edition of Mathematics in Grade Two, in a hurry! ! ! ! ! ! ! ! ! ! ! ! ! ! !
1, after SAS proves congruence, SSS is obtained.

2, no, because the root number 64=8, only the prescription is inexhaustible.

3, the monomial is a pair of opposites, such as √2 is √ 2, which is generally a polynomial, so a√x+b√y and a√x-b√y are physical and chemical factors of each other.

Not necessarily, the calculation can be simplified by reducing it to the simplest quadratic root.

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