Topic: Expansion

Expand and simplify: (6x – 7)^2. [Unique SSC algebra item 2]

• 36x^2 – 42x + 49
• 36x^2 – 84x – 49
• 36x^2 – 84x + 49
• 36x^2 + 84x + 49

Expand and simplify: (x + 7)^2.

• x^2 + 14x + 49
• x^2 – 14x + 49
• x^2 + 14x – 49
• x^2 + 7x + 49

Use identity to expand: (4x + 6)(4x – 6).

• 16x^2 – 36
• 16x^2 + 48x – 36
• 16x^2 – 48x – 36
• 16x^2 + 36

Expand and simplify: (6x – 7)^2.

• 36x^2 – 42x + 49
• 36x^2 + 84x + 49
• 36x^2 – 84x – 49
• 36x^2 – 84x + 49

Expand and simplify: (x + 2)^2.

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

Use identity to expand: (7x + 9)(7x – 9).

• 49x^2 + 81
• 49x^2 – 81
• 49x^2 – 126x – 81
• 49x^2 + 126x – 81

Expand and simplify: (9x – 1)^2.

• 81x^2 – 18x + 1
• 81x^2 – 9x + 1
• 81x^2 + 18x + 1
• 81x^2 – 18x – 1

Expand and simplify: (x + 5)^2.

• x^2 – 10x + 25
• x^2 + 10x – 25
• x^2 + 10x + 25
• x^2 + 5x + 25