Quiz 1

Expand: 5(y+2)

• 5y+10

• 5y-7

• 5y+2

• 10y+5

 Multiply the binomial:

 $\left(4x-5\right)\left(3x+2\right)$  

•  $12x^2+23x-10$  

•  $12x^2+7x-10$  

•  $12x^2-7x-10$  

•  $12x^2-23x-10$  

If we have the equation y=ax²+bx+c, how can we can find the x-coordinate of the vertex?

• -a
• -b/a
• b/2a
• -b/2a

Expand the expression  $\left(5x-6\right)^2$  

•  $25x^2+36$  

•  $25x^2-36$  

•  $25x^2-60x-36$  

•  $25x^2-60x+36$  

The graph of y = −5x² + 9 passes through (1,2a) in the standard (x,y) coordinate plane. What is the value of a ?

• 2

• 4

• 7

• -1

• -8

Simplify
 (2a²b⁴z)(6a³b²z⁵)

• 8a⁵b⁶z⁶
• 12a⁶b⁸z⁵
• 12a⁵b⁶z⁶
• 8a⁶b⁸z⁵

(4x³-5x²+3x)+(-2x³-x²+6x)

• 2x³-6x²-9x
• 2x³+6x²+9x
• -2x³-6x²+9x
• 2x³-6x²+9x

Factor:

 $2x^2-9x+10$  

•  $\left(2x-5\right)\left(x-2\right)$  

•  $\left(x-5\right)\left(x-2\right)$  

•  $\left(x-4\right)\left(x-10\right)$  

•  $\left(x-1\right)\left(x+20\right)$  

 $4+36\ \div\ \left(10-8\right)^2\ \times3\ +\ 7$  

• 37

• 38

• 100

• 130

Simplify
(3x³y⁵)⁴

• 3x¹²y²⁰
• 81x¹²y²⁰
• 12x¹²y²⁰
• 81x⁷y⁹