Solving Quadratics, simplifying radicals

Simplify: (x + 5)(8x + 8)

• 42x² + 6x – 48

• 8x² + 48x + 40

• 8x² + 32x – 40

• 8x² + 40

Simplify: (m + 5)(3m² – 5m – 4)

• 3m³ – 20m² – 41m – 20

• 4m³ + 8m² + 34m + 20

• 3m³ + 10m² – 29m – 20

• 4m³ + 20m² – 15m + 20

Factor completely: n² – 16

• (n + 4)(n – 4)

• (n + 8)(n + 2)

• (n - 4)(n - 4)

• (n + 8)(n – 2)

Factor completely: 15x³ + 21x² + 25x + 35

• (3x² – 5)(3x² – 7)

• (3x² – 5)(5x – 7)

• 5(3x² + 5)(x + 1)

• (3x² + 5)(5x + 7)

Factor completely: x² – 2x

• (x + 1)(x - 2)

• x(x – 2)

• x(x + 1)

• x(x + 2)

Factor completely: 5a² – 23a – 10

• (5a – 2)(a – 5)

• 5(a + 2)(a + 1)

• (5a + 2)(a – 5)

• 5(a + 2)(a – 1)

What is the factorization of a² + 8a - 20?

• (a - 10)(a - 2)

• (a + 10)(a + 2)

• (a + 10)(a - 2)

• (a + 2)(a - 10)

Solve the equation 8x² - 13x + 5 = 0 by factoring.

• {5/8, 1}

• {2/3, -1}

• {1/5, -8}

• {-5/8, -1}

Simplify -3√108

• -9√36

• -6√3

• -9√12

• -18√3

Simplify √-18

• 3i√2

• 9√2

• 2i√3

• 4i√3