(5×10²)×(4×10^ 9)=20×10^11=2×10^12
(5x10^2)x(4x10^9)
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相关问题
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计算:(9x10^5)x(-9x10^2)^2/(-9x10^5) 需要完整解答,
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[7/10]x-[3/10]x=10 5.6+4x=8 2.5x-1.1=0.9.
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3y-1/2=1/3 x-8=2x+7 2x=5x-1 9-10x=9x-10 4/5x=5x-21
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2.X(2X-5)=4X-10 2X^2-9X+10=0 (2X-5)(X-2)=0 X1=2.5,X2=2
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3/5+2/5=9/10 2/3x+1/4x=四又四分之一 x-2/5x=9/10
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5/35 X 4/9 + 4/7 X 6/9 1.2/9 - 2/9 X 3/10 2.5/35 X 4/9 + 4/7
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解方程:X+2/7X=3/4,X-1/5X=3/10,2X+7X=9/10
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整数指数冥(5.2 x 10^-9)除以(-4 x 10^-3)
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9-3x-4x=4 27+5x-7x=3 7x-9x+26=10 10+x=4+2x 26.6-3x=29.9-6x 1
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9.3x10^4 + 0.3x10^-5 =