Top 11 Đề kiểm tra Đại số Toán 8 Học Kì 1 Chương 1...

A. $6x^3- 4x + 1$

B. $6x^3- 12x^2 + 3x$

C. $6x^3 + 12x^2- 3x$

D. $6x^3 + 12x^2 + 3x$

A. –12

B. –25

C. 12

D. 25

A. $x^2 – 10x + 25 = {\left(x – 5\right)}^2$

B. $x^2 – 10x + 25 = {\left(5 – x\right)}^2$

C. $x^2 – 10x + 25 = – {\left(5 – x\right)}^2$

D. $x^2 + 10x + 25 = {\left(5 + x\right)}^2$

A. –35

B. 35

C. –30

D. 30

A. (x + y)(x – y)(x + 1)

B. (x + y + 2)(x – y + 2)

C. 4(x + y)(x – y)

D. (x + y + 2)(x + y – 2)

A. $x^{20}$

B. $-x^{20}$

C. $x^4$

D. $-x^4$

A. –2

B. 2

C. -26/29

D. 26/29

A. –1

B. 0

C. 1

D. 2

A. 990

B. 9900

C. 9000

D. 1100

A. $5a{c}^2$

B. $5ab{c}^2$

C. $20a{c}^2$

D. 5abc

A.$(x + y){\left(x – y\right)}^2$

B. $(x – y)(x^2 + xy + y^2)$

C. $(x + y)(x^2 – xy + y^2)$

D. $(x – y)(x^2 + 2xy + y^2)$

A. x + 1

B. x – 1

C. –76

D. 2x + 1

A. Min A = 1

B. Min A = 5

C. Min A = 4

D. Min A = 2

A. $-15x^3 + 25x^2 – 5x$

B. $-15x^3 - 25x^2 + 5x$

C. $15x^3 - 25x^2 + 5x$

D. $15x^3 + 25x^2 – 5x$

A. –20

B. 20

C. 9

D. –9

A.${\left(x-4\right)}^2$

B.${\left(4-x\right)}^2$

C.$- {\left(4-x\right)}^2$

D.$-{\left(x-4\right)}^2$

A. $(x + 3)(x – 3)(x – y)$

B. $(x – 3 + y)(x – 3 – y)$

C. $(x + y + 3)(x + y – 3)$

D. $(x + y)(x – y)(x – 3)$

A. –20

B. –65

C. 65

D. 20

A. 2x + 3

B. 2x – 3

C. –2x + 3

D. 2x – 5

A. $4x(2x^2 – 5x + 3) = 8x^3 – 20x^2 + 12x$

B. $5x(3x^2 – 6x – 1) = 15x^3 – 30x^2 – 5x$

C. $(–2x)( –3x^2 + 4x –7) = –6x^3 – 8x^2 + 14x$

D. $(–3x)( –x^2 – 3x – 4) = 3x^3 + 9x^2 + 12x$

A. 9604

B. 9801

C. 10000

D. 10201

A. $x^2 – 6x + 9 = {\left(x – 3\right)}^2$

B. $x^2 – 6x + 9 = {\left(3-x\right)}^2$

C. $x^2 – 6x + 9 = -{\left(3-x\right)}^2$

A. $(x + y)(x – y)(y – 1)$

B. $(x + y)(x – y)(y + 1)$

C. $(x + y + 1)(x + y – 1)$

D. $(x + y + 1)(x – y – 1)$

A. 91

B. –91

C. 84

D. –84

A. 5x – 1

B. 5x + 1

C. 5x – 5

D. 5x + 5