【分式的乘除】几道计算题(1)x-2 / x+1 * (x ² -1 / x ² -4)=(2)(x ² -3x+2 / x ² +3x+2)* (x+x ² / 2x-2)=(3)(a ² -b ² / 2a+2b)* (4 / a ² +ab-2b ² )=(4)4ab÷(b /
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【分式的乘除】几道计算题(1)x-2 / x+1 * (x ² -1 / x ² -4)=(2)(x ² -3x+2 / x ² +3x+2)* (x+x ² / 2x-2)=(3)(a ² -b ² / 2a+2b)* (4 / a ² +ab-2b ² )=(4)4ab÷(b /
【分式的乘除】几道计算题
(1)x-2 / x+1 * (x ² -1 / x ² -4)=
(2)(x ² -3x+2 / x ² +3x+2)* (x+x ² / 2x-2)=
(3)(a ² -b ² / 2a+2b)* (4 / a ² +ab-2b ² )=
(4)4ab÷(b / 2ab)* (a / 2b)=
(5)(3b ² / 2a ³ )² / ( - a/b)的五次方=
(6)(x ³ +x ² / 1-x ² )/ x ² *x=?(后面的就是没有括号,所以我提前说一下哈)
【分式的乘除】几道计算题(1)x-2 / x+1 * (x ² -1 / x ² -4)=(2)(x ² -3x+2 / x ² +3x+2)* (x+x ² / 2x-2)=(3)(a ² -b ² / 2a+2b)* (4 / a ² +ab-2b ² )=(4)4ab÷(b /
(1)x-2 / x+1 * (x ² -1 / x ² -4)
=(x-2)/(x+1) * [(x+1)(x-1)] / [(x+2)(x-2)]
=(x-1) / (x+2)
(2)(x ² -3x+2 / x ² +3x+2)* (x+x ² / 2x-2)
=[(x-1)(x-2)] / [(x+1)(x+2)] * x(x+1) / 2(x-1)
=x(x-2) / 2(x+2)
(3)(a ² -b ² / 2a+2b)* (4 / a ² +ab-2b ² )
=[(a+b)(a-b)] / 2(a+b) * 4 / (a-b)(a+2b)
=(a-b)/2 * 4/(a-b)(a+2b)
=2 / (a+2b)
(4)4ab÷(b / 2ab)* (a / 2b)
=4ab ÷(1/2a) * (a/2b)
=4ab*2a*a/2b
=4a³
(5)(3b ² / 2a ³ )² / ( - a/b)的五次方
= [ (9b^4) / (4a^6) ] / [(-a)^5 / b^5 ]
= [ (9b^4) / (4a^6) ] * [ b^5 / (-a)^5 ]
= -9b^9 / 4a^11
(6)(x ³ +x ² / 1-x ² )/ x ² *x
=x^2(x+1) / [(1+x)(1-x)] / x
=x^2 / (1-x) /x
=x / (1-x)
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