题目列表

题目内容
y+5 > x

Quantity A

y+2

Quantity B

x-2




x-y=1

Quantity A

$$x^{2}$$ - $$y^{2}$$

Quantity B

1


-1 ≤ x ≤ 1and -1 ≤ y ≤ 1

Quantity A

$$(x+y)^{2}$$

Quantity B

$$xy^{2}$$


x+y ≠ 0

Quantity A

$$2(x+y)^{2}$$

Quantity B

$$(2x+2y)^{2}$$


x > 0, y < 0

Quantity A:x+y-1

Quantity B:x-y+1

Quantity A

$$(x+\frac{1}{x})^{-3}$$

Quantity B

$$x^{-3}$$ + $$(\frac{1}{x})^{-3}$$


x-y > y

x-y < x

Quantity A: x

Quantity B: y

Quantity A

($$x^{2}$$ + $$y^{2}$$) ($$x^{2}$$ - $$y^{2}$$)

Quantity B

($$x^{3}$$+$$y^{3}$$) (x-y)


ab≠0

Quantity A

$$\sqrt{a^{2}+b^{2}}$$

Quantity B

$$\sqrt{a^{2}}$$ + $$\sqrt{b^{2}}$$


Among people A, B and C, B is 5 years older than A, while B is 20 years older than C.

Quantity A

A

Quantity B

2C


y > 1

Quantity A

100$$y^{2}$$

Quantity B

225($$y^{2}$$ - 1)


y > x > $$\sqrt{2}$$

Quantity A

x+y

Quantity B

$$\sqrt{xy}$$


Quantity A

$$\frac{(x+1)(x+4)}{x^{3}+2x^{2}+3}$$

Quantity B

(x+2)(x+3)


n is an integer greater than 1

Quantity A

$$\frac{5}{n}$$

Quantity B

$$\frac{\frac{5}{n+1}+\frac{5}{n-1}}{2}$$


1 < a < b < c

Quantity A

$$\frac{a+b}{a+c}$$

Quantity B

$$\frac{a+c}{b+c}$$


$$x \neq 0$$

$$y \neq 0$$

$$x+y \neq 0$$

Quantity A

$$x^{-3}$$+$$y^{-3}$$

Quantity B

$$(x+y)^{-3}$$


The operation ⊙ is defined by a⊙b=$$a^{2}$$+2$$b^{2}$$+3a+4b for all numbers a and b

x > y > 0

Quantity A

x⊙y

Quantity B

y⊙x


Three positive integers M, N, K are the hundreds digit, tens digit and ones digit of the integer MNK.

Quantity A

M+N*N+K

Quantity B

M*M+N+K


x ≠ -2

Quantity A

(x+2)x

Quantity B

(x+2)(x-2)


If $$3^{x}$$+$$3^{x}$$+$$3^{x}$$=$$9^{x-2}$$, what is the value of x?

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25000 +道题目

7本备考书籍

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