Algebraic expressions and formulas

What is (a + b) squared?

• 1 2a + 2b
• 2 a2 - 2ab + b2
• 3 a2 + 2ab + b2
• 4 a2 + b2

What is (a - b) squared?

• 1 a2 - ab + b2
• 2 a2 - 2ab + b2
• 3 a2 - b2
• 4 a2 + 2ab + b2

If a + b = 5 and ab = 6, what is a2 + b2?

• 1 13
• 2 37
• 3 11
• 4 25

What is the value of (101)2 using a formula?

• 1 10001
• 2 10101
• 3 10201
• 4 10200

The degree of the polynomial 3x^4 + 2x^2 + 1 is:

• 1 1
• 2 2
• 3 4
• 4 3

a2 - b2 is equal to:

• 1 a(a - b)
• 2 (a + b)2
• 3 (a + b)(a - b)
• 4 (a - b)2