Cau 13. Cho cac so thuc duong x, y thoa man log_6x=log_9y=log_4(2x+2y) . Tinh ti so?y Bx/y=2/3 x/y=2/(√3-1) x/y=2/(√3+1)x/y=3/2 相关知识点: 试题来源: 解析 BChọn BLờigiảiGiả sử log_6x=log_9y=log_4(2x+2y)=t. Ta có: \(x=6y=...
Cau 3: Thuc hien cac phep tinh sau.a(x^2-2)/(x-1)-(-1)/(x-1) (x+3)/(x^2-4)-1/(x^2-4) c)(x-2)/(x-6)-(18-x)/(x-6)+(x+2)/(x-6) d)(5x^2+x+4)/(x^3-8)-(x^2-2x)/(x^3-8)-(x^2-3x-8)/(x^3-8) ...
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Bai 4. Thuc hien cac phep tinh sau(10+2√(10))/(√5+√2)+8/(1-√5) 10+2 10a)b)(2√8-√(12))/(√(18)-√(18))-(√5+√(27))/(√(30+√(162))) d)(√(3-√5))/(√(10)+√2) e)1/(√2+√(2+√3))+1/(√2-√(2-√3)) D)((√5+2)^2-8√...
Bai 1. Thuc hien cac phep tinh sau:a(x^2-1)/(x+2)⋅1/(1-x) (x+2)/(x-1)⋅(1-x^3)/(x^3+8) c(x+4)/(x-3)⋅(x^2+x-12)/(x^2+5x+4) d (x^2)/(x^2-4x)⋅(8-2x) 相关知识点: 试题来源: 解析 1. .2. .3. .4. . ...
Vi du 2. Tinh giá tri cac bieu thuc sau:a) A=2^(10)-2^5b) B=4^3-4^2-4c)C=3^2.2^3+4^3.2^5d) D=1^3+2^3+3^3+4^3+5^3 相关知识点: 试题来源: 解析 a) A=2^(10)-2^5=1024-32=992b) B=4^3-4^2-4=64-16-4=44c) C=3^2⋅2^3+4^3⋅2^5=...
Bai 1: Thuc hien cac phep tinh sau:a)xyz-5xyz b) -3xy^2+1/2xy^2c) ((-2)/3x^2y^3)(3/4xy) 相关知识点: 试题来源: 解析 a) xyz-5xyz=(1-5)xyz=-4xyzb)-2ab^2+1/2x^2-1/(-3)=1/2c) (2/3x^2y^3)(3/4xy)=(2/3⋅3/4)x^3y^4=(-1)/2x^3y^4 ...
百度试题 结果1 题目1 Thuc hien cac phép tinh sau:3 cm+5 cm=8cm17 cm-4 cm =13 cm12 cm + 6 cm =18 cm18 cm- 8 cm = 10 cm 相关知识点: 试题来源: 解析 8 cm13 cm18 cm10 cm 反馈 收藏
百度试题 结果1 题目Cau 32log_(16)a=log_2 Cho cac so thuc duong a, b thoa man b=log_2(2a-b)/3 Tinh ti so T=a/ b T=5/4 4T= A. B.。T=2/3 C.T=3/2 D. 相关知识点: 试题来源: 解析 C 反馈 收藏