大师作文网((3x-7)^2-(x+5)^2)/(4x-24).2,((x^2+1)^2-4x(x^2+1)+4x^2)/(x-1
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((3x-7)^2-(x+5)^2)/(4x-24).2,((x^2+1)^2-4x(x^2+1)+4x^2)/(x-1)^2 计算
((3x-7)^2-(x+5)^2)/(4x-24).2,((x^2+1)^2-4x(x^2+1)+4x^2)/(x-1)^2 计算 急
((3x-7)^2-(x+5)^2)/(4x-24).2,((x^2+1)^2-4x(x^2+1)+4x^2)/(x-1)^2 计算 急
((3x-7)^2-(x+5)^2)/(4x-24).
=(3x-7+x+5)(3x-7-x-5)/(4x-24)
=(4x-2)(2x-12)/(4x-24)
=4(2x-1)(x-6)/4(x-6)
=2x-1
((x^2+1)^2-4x(x^2+1)+4x^2)/(x-1)^2
=[(x^2+1)-2]^2/(x-1)^2
=(x^2-1)^2/(x-1)^2
=(x-1)^2(x+1)^2/(x-1)^2
=(x+1)^2
=x^2+2x+1
=(3x-7+x+5)(3x-7-x-5)/(4x-24)
=(4x-2)(2x-12)/(4x-24)
=4(2x-1)(x-6)/4(x-6)
=2x-1
((x^2+1)^2-4x(x^2+1)+4x^2)/(x-1)^2
=[(x^2+1)-2]^2/(x-1)^2
=(x^2-1)^2/(x-1)^2
=(x-1)^2(x+1)^2/(x-1)^2
=(x+1)^2
=x^2+2x+1
|X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10|
x+2/x+1-x+3/x+2-x+4/x+3+x+5/x+4
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设函数f(x)=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10),
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1x+2x+3x+4x+5x+6x+7x…+99x=100
(X+2)/(X+1)-(X+4)/(X+3)=(X+6)/(X+5)-(X+8)/(X+7)
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3x(7-2x)+5x(2x-1)=4x(x-3)+5