数学化简或计算 最后一个是分解因式1.2√1/2-√x^3 +√8x 2.x√x + x√y x+√xy +y__________ _ _____________ xy-y^2 x√x _y√y3 b-√ab √a b a +b( √a + ________)÷(___________ +________ _ ____)√a +√b √ab +b √ab +b
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![数学化简或计算 最后一个是分解因式1.2√1/2-√x^3 +√8x 2.x√x + x√y x+√xy +y__________ _ _____________ xy-y^2 x√x _y√y3 b-√ab √a b a +b( √a + ________)÷(___________ +________ _ ____)√a +√b √ab +b √ab +b](/uploads/image/z/3669864-24-4.jpg?t=%E6%95%B0%E5%AD%A6%E5%8C%96%E7%AE%80%E6%88%96%E8%AE%A1%E7%AE%97+%E6%9C%80%E5%90%8E%E4%B8%80%E4%B8%AA%E6%98%AF%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F1.2%E2%88%9A1%EF%BC%8F2%EF%BC%8D%E2%88%9Ax%5E3+%2B%E2%88%9A8x+2.x%E2%88%9Ax+%2B+x%E2%88%9Ay+x%2B%E2%88%9Axy+%2By__________+_+_____________+xy-y%5E2+x%E2%88%9Ax+_y%E2%88%9Ay3+b-%E2%88%9Aab+%E2%88%9Aa+b+a+%2Bb%28+%E2%88%9Aa+%2B+________%29%C3%B7%28___________+%2B________+_+____%29%E2%88%9Aa+%2B%E2%88%9Ab+%E2%88%9Aab+%2Bb+%E2%88%9Aab+%2Bb)
数学化简或计算 最后一个是分解因式1.2√1/2-√x^3 +√8x 2.x√x + x√y x+√xy +y__________ _ _____________ xy-y^2 x√x _y√y3 b-√ab √a b a +b( √a + ________)÷(___________ +________ _ ____)√a +√b √ab +b √ab +b
数学化简或计算 最后一个是分解因式
1.2√1/2-√x^3 +√8x
2.x√x + x√y x+√xy +y
__________ _ _____________
xy-y^2 x√x _y√y
3 b-√ab √a b a +b
( √a + ________)÷(___________ +________ _ ____)
√a +√b √ab +b √ab +b √ab
4.x^3_11x^2+31x-21
这是第3个 b-√ab √a b a +b
( √a + ________)÷(___________ +________ _ ____)
√a +√b √ab +b √ab +b √ab
数学化简或计算 最后一个是分解因式1.2√1/2-√x^3 +√8x 2.x√x + x√y x+√xy +y__________ _ _____________ xy-y^2 x√x _y√y3 b-√ab √a b a +b( √a + ________)÷(___________ +________ _ ____)√a +√b √ab +b √ab +b
4.x³-11x²+31x-21=x²(x-1)-10x(x-1)+21(x-1)
=(x-1)(x²-10x+21)=(x-1)(x-3)(x-7).
最好分成四个问题提问,很快就会有答案.也为答题者想想.大家方便.