Review for Quiz on Polynomials

What is the leading coefficient of the following function?

 $f\left(x\right)=5x^2+3x^4-6x+4$  

• 5

• -6

• 3

• 4

 $\left(6x^2-3x+4\right)+\left(4x^2-7x+6\right)$  

Perform the operation.

•  $10x^2+10x-10$  

•  $10x^2-10x-10$  

•  $10x^2-10x+10$  

•  $10x^2+4x-10$  

Perform the following operation.
 $\left(7x^5+4x^2+x\right)-\left(3x^5-3x^3-6x\right)$  

•  $4x^5+3x^3+4x^2+7x$  

•  $4x^5-3x^3+4x^2-5x$  

•  $10x^5-3x^3+4x^2-5x$  

•  $3x^5-3x^3+4x^2+7x$  

Perform the following operation.
 $\left(4x+2\right)\left(x^2-4x+8\right)$  

•  $4x^3+14x^2-24x-16$  

•  $4x^3-14x^2-24x-16$  

•  $4x^3-14x^2+24x+16$  

•  $4x^3-4x^2+24x+18$  

How many root/s does the polynomial equation have?

x⁴-3x²+10=0

• 1

• 2

• 3

• 4

• -3x² + 3x + 2
• x² - 3x - 2
• -3x² + 2
• x² + 3x + 2

 $\frac{5x^2-9x-2}{x-2}$  

 $\frac{81x^9-54x^6+27x^3}{9x}$  

•  $9x^9-6x^6+3x^3$  

•  $9x^8-6x^5+3x^2$  

•  $9x^{10}-6x^7+3x^4$  

•  $81x^8-6x^5+3x^2$  

 $\frac{36x^2-121}{6x+11}$  

 $\frac{16x^8+24x^6-40x^4}{4x^3}$  

•  $4x^5+6x^3-10x$  

•  $4x^8+6x^6-10x^4$  

•  $12x^5+20x^3-44x$  

•  $4x^{11}+6x^9-10x^7$