瘋狂算數學－認識多項式與多項式的加減

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Mathematics

8th Grade

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10 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

若A為一次多項式，B為三次多項式，則A＋B為幾次多項式？

四次

三次

二次

一次

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

若A為二次多項式，B為三次多項式，則2A－B為幾次多項式？

四次

三次

二次

一次

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

(x + 5) + (2x + 7)

3x + 12

2x² + 35

2x² + 12x + 35

3x + 57

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

(x²+5) + (x-2)

x²-2

x²+x+3

x²-x+3

x²+2

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

(3x²+5x-2) + (9x²-3)

12x²+5x-5

12x^2-5x-5

12x²+5x+5

-3x²+5x-5

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

(x²+6x-3) - (8x²+6x-9)

9x²+x-1

6x²-x

7x²

-7x²+6

MULTIPLE CHOICE QUESTION

1 min • 1 pt

下列何者為x的多項式？

$\sqrt{x^2+2x}$

$\frac{x}{\ \ x-5\ \ }$

$\left|x+3\right|$

$\sqrt{5}$

MULTIPLE CHOICE QUESTION

1 min • 1 pt

多項式 $f\left(x\right)=4x^5+6x^4-7x^3+5x-3$

$x^2$ 的係數 $=5$

$x^2$ 的係數 $=0$

$x^2$ 的係數 $=-7$

$x^2$ 的係數 $=4$

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

$3x^2+ax+b$ $=cx^2+5x-7$
請問：

$a=5、b=-7、c=3$

$a=3、b=5、c=7$

$a=-7、b=3、c=5$

$a=-5、b=7、c=-3$

10.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

$ax^3+\left(b-3\right)x^2+\left(c-4\right)x+d$ 為零多項式，試問：

$a=1、b=0、c=5、d=1$

$a=0、b=3、c=4、d=5$

$a=0、b=3、c=4、d=0$

$a=1、b=3、c=4、d=1$

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瘋狂算數學－認識多項式與多項式的加減

若A為一次多項式，B為三次多項式，則A＋B為幾次多項式？

若A為二次多項式，B為三次多項式，則2A－B為幾次多項式？

(x + 5) + (2x + 7)

(x2+5) + (x-2)

(3x2+5x-2) + (9x2-3)

(x2+6x-3) - (8x2+6x-9)

下列何者為x的多項式？

多項式 f(x)=4x5+6x4−7x3+5x−3f\left(x\right)=4x^5+6x^4-7x^3+5x-3f(x)=4x5+6x4−7x3+5x−3

3x2+ax+b3x^2+ax+b3x2+ax+b =cx2+5x−7=cx^2+5x-7=cx2+5x−7 請問：

ax3+(b−3)x2+(c−4)x+dax^3+\left(b-3\right)x^2+\left(c-4\right)x+dax3+(b−3)x2+(c−4)x+d 為零多項式，試問：

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Discover more resources for Mathematics

(x²+5) + (x-2)

(3x²+5x-2) + (9x²-3)

(x²+6x-3) - (8x²+6x-9)

多項式 $f\left(x\right)=4x^5+6x^4-7x^3+5x-3$

$3x^2+ax+b$ $=cx^2+5x-7$
請問：

$ax^3+\left(b-3\right)x^2+\left(c-4\right)x+d$ 為零多項式，試問：