25X(0.4-Y)²+10Y(Y-0.4)²,其中X=0.04 Y=2.4 先分解因式在求值
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25X(0.4-Y)²+10Y(Y-0.4)²,其中X=0.04 Y=2.4 先分解因式在求值
25X(0.4-Y)²+10Y(Y-0.4)²,其中X=0.04 Y=2.4 先分解因式在求值
25X(0.4-Y)²+10Y(Y-0.4)²,其中X=0.04 Y=2.4 先分解因式在求值
25X(0.4-Y)^2+10Y(Y-0.4)^2
=(Y-0.4)^2*(10Y+25X)
=(2.4-0.4)^2*(10*2.4+25*0.04)
=2^2*(24+1)
=4*25
=100
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25X(0.4-Y)²+10Y(Y-0.4)²,其中X=0.04 Y=2.4 先分解因式在求值
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