Semester 1 Review Week 5

Semester 1 Review Week 5

Multiple Choice

Simplify the expression.

-3x²( 7x² - x + 4)

• -21x⁴ + 3x³ -12x²

• 7x² - x + 4 (-3x²)

• 21x⁴ + 3x³ + 12x²

• -12x² + 3x³ -21x⁴

Multiple Choice

Find the area of a rectangle with length (x - 5) and width (3x + 1).

• 3x²+16x-5

• 3x²-14x+5

• 3x²-14x-5

Multiple Choice

Simplify the expression.

(4n⁴-8n+4) - (8n²+4n⁴+1)

• -8n² - 8n + 3

• -7n² - 8n + 3

• -6n² - 8n + 3

• -7n² - 4n + 3

Multiple Choice

A rectangle has width (2x + 3) and length (2x - 4). What is the perimeter of the rectangle?

• 4x - 12

• 4x - 1

• 8x - 2

• 4x² - 2x - 12

Multiple Choice

Simplify

(6^3/4)^1/3

• 6^1/4

• 6^3/12

• 6^4/7

• 6^9/12

Multiple Choice

Simplify . Your answer should contain only positive exponents.$yx^{\frac{1}{3}}\cdot xy^{\frac{3}{2}}$  

•  $x^{\frac{4}{3}}y^{\frac{5}{2}}$  

•  $x^{\frac{2}{3}}y^{\frac{1}{2}}$  

•  $x^{\frac{1}{3}}y^{\frac{3}{2}}$  

•  $x^{\frac{2}{3}}y^{\frac{4}{3}}$  

Multiple Choice

The expression (2 + 3i)² is equal to

• -5

• -5 + 12i

• 13

• 13 + 12i

Multiple Choice

√-36

• 6

• -6

• -6i

• 6i