Cubics

Find the solutions of 6x³-5x-2x+1

• (x-1)(3x-1)(2x+1)

• x = 1, 1/3, -1/2

• x = 1, -1/3, 1/2

• (x-1)(3x+1)(2x-1)

Which of the following is a factor of 2x³-13x²+27x-18?

• (x-5)

• (3x-2)

• (2x+3)

• (2x-3)

x³ - 64

• (x - 4)(x² + 4x + 16)

• (x - 3)(x² + 3x + 9)

• (x - 5)(x² + 5x + 25)

• (x + 4)(x² - 4x + 16)

x³ - 343

• (x + 7) (x² - 7x + 49)

• (x² + 1) (x - 343)

• (x - 7) (x² + 7x + 49)

• (x² - 343) (x + 1)

27x³ - 1

• (3x - 1)(9x² + 3x + 1)

• (2x - 1)(4x² + 2x + 1)

• (3x - 2)(9x² + 6x + 4)

• (4x + 1)(16x² + 4x + 1)

Factor:   x³ + 1

• (x + 1)³

• (x+1)(x² - x + 1)

• (x - 1) (x² + x - 1)

• (x + 1)(x² - 2x + 1)

8x³ + 27

• (3x - 2)(9x² + 6x + 4)

• (3x - 1)(9x² + 3x + 1)

• (2x + 3)(4x² - 6x + 9)

• (2x - 1)(4x² + 2x + 1)

216x³+125

• 6(x+5)³

• (6x+5)³

• (6x+5)(6x²-30x+25)

• (6x+5)(36x²-30x+25)

8x³-27

• (2x+3)(4x²-6x+9)

• (2x-3)(4x²+6x+9)

• (2x-3)(4x²+6x-9)

• (2x-3)(2x²+6x+9)

If x³-7x²+5x-4 = (x-3)(x²+bx+c)+r
Find b, c and r.

• b= -11, c= -7, r= -25

• b= -4, c= 17, r= -25

• b= -4, c= -7, r= -17

• b= -4, c= -7, r= -25