Conceptual Algebra

Select all expressions equal to 9(x + 8).

• x + 72
• 9 × (x + 8)
• 9x + 72
• 9x + 8
• 17x

Select all statements true for the equation x^2 – 16x + 64 = 0.

• Sum of roots is 16
• Product of roots is 64
• Product of roots is 16
• The roots are always equal
• Sum of roots is 64

Select all values that satisfy x^2 = 25.

• 0
• 25
• 6
• 5
• -5

Select all correct factors of x^2 – 4.

• x + 2
• x – 4
• 2x – 2
• x + 4
• x – 2

Select all expressions equivalent to (x + 6)^2.

• x^2 + 36
• x^2 + 12x + 36
• x^2 – 12x + 36
• (x + 6)(x + 6)
• x^2 + 6x + 36