Adding, substracting and multiplying polynomial

Solve (3 x + 4 ) (3 x - 4 )

• 9x² - 16

• 9x - 4

• 3x - 16

• 9x² - 12x + 8

Answer explanation

(a + b)(a - b) = a² - b²

(x - 2)²

• x² - 4

• x² + 4x + 4

• x² - 4x + 4

• x - 4x - 4

Answer explanation

(a - b)²= a² - 2ab + b²

(8x + 1 )(7x - 2) =

• 56x - 9x + 2

• 56x² - 9x - 2

• 5x - 2

• 15x - 2

Answer explanation

2x³ (3x⁴ + 9x² -3x + 1)

• 6x +18x⁵ - 6x⁴ + 2x²

• 6x⁷ 18x - 6x⁴ + 2x³

• 6x¹² +18x⁵ - 6x⁴ + 2x³

• 6x⁷ +18x⁵ - 6x⁴ + 2x³

Answer explanation

( 3x + 2)²

• 6x² - 12x + 4

• 9x² + 12x + 4

• 9x⁴ + 12x + 4

• 9x + 12x + 4

Answer explanation

( a + b)² = a² + 2ab + b²

(5x³ - 8x² + 4x) + (2x³ + 4x - 3)

• 7x³ -8x² + 8x - 3

• 10x⁹ -8x² + 8x - 3

• 5x⁹ -8x² + 8x - 3

• 10x³ -32x² + 8x - 3

Answer explanation

(10x⁵ -4x⁴ - 3x² + 1) - (2x⁵ + 3x⁴ - 5x + 3) =

• 8x⁵ - 7x⁴ - 3x² + 5x - 2x

• 12x⁵ - 7x⁴ - 3x² - 5x - 2

• 8x⁵ - 7x⁴ - 3x² - 5x - 2

• 20x¹⁰ - 1x⁴ - 3x² - 5x - 2

Answer explanation

(2x - 8 )(2 x + 8)

• 2x + 16

• 4x² + 64

• 4x + 16

• 4x² - 64

Answer explanation

( m - 2 )³ =

• m³ - 6m² + 12m - 8

• 4m³ + 6m² + 12m - 8

• m³ + 6m² + 12m - 8

• m² - 6m² + 12m - 8

Answer explanation

describe and correct the error