Unit 7a Review for Farm Project

How many terms are in the following polynomial?
3x³ - 2y + 8x -16

• 1
• 2
• 4
• -16

 Multiply:
(r + 7)(r − 7) 

• r ² − 49 
• r ² + 14
• r ² − 7r + 49 
• r ² + 7r + 49 

Multiply
(x²-2x+1)(x+1)

• x³-x²-x+1
• x³-2x+2
• x³+x²+x+1
• x³-3x²-3x+1

Find the product:
(5n-8)(5n+8)

• 25n²-64
• 10n²
• 5n²+16
• 16

Find the difference.

(7p + 4p³ - 8) - (-3p² + 2 - 9p)

• -3p² + 4p³ -15 + 9

• 3p³ + 4p² - p + 3

• 4p³ +3p² +16p -10

• 4p³ +3p² + 16p + 10

The length of a rectangle is 5 m greater than the width. The perimeter is 150 m. Which equation represents how to find the length and the width?

• 2x + 5 = 150

• 4x + 10 = 150

• 4x + 5 = 150

• 2x + 10 = 150

The side length of a square is (x - 7), which of the following below would represent the area?

• x²-49

• x²+49

• x²-14x+49

• x²-14x-49

4k²(6k² + 9kq - 5q²)

• 24k² + 36k³q - 20k²q²
• 24k⁴ + 36kq - 20k²q²
• 24k⁴  + 36k³q - 20k²q²
• 24k + 36 kq - 20 k²q

^{The perimeter of the
 triangle is 10x+20. Find the length of the missing side}

• 6x+10
• 15x+30
• 5x+10
• 5x-10

Simplify the following expression:
-8 (5b + 2) -7 (b - 5)

• -33b + 19
• -47b² +  21
• 33b - 19
• -47b +19