Algebraic Identities

(x² - y²) × (x² + y²) = ______

• 2x² + 2y²
• x⁴ - y⁴
• x⁴ + y⁴
• 2x⁴

(x - 8) ( x - 8) = ______

• x² - 64
• x² + 64
• x² - 16x + 64
• x² + 16x + 64

• none of these

• none of these

Using identity find 201 x 199

• 3000

• 3999

• 39999

• 31111

• none of these

Find (102)² - (98)²

• 200

• 400

• 600

• 800

(a + b) (a - b) =

• a² - 2ab + b²

• a² + 2ab + b²

• a² – b²

• 2 (a² + b²)

a³ + b³ + 3ab(a + b) =

• (a - b)³

• a³ + b³

• a³ - b³

• (a + b)³