Factorization by splitting middle term

Factor by Splitting the Middle:
5x² + 8x + 3

• (5x + 3)(x + 1)
• (5x - 3)(x - 1)
• (5x +8)(x + 3)
• Not Factorable

Factor by Splitting the Middle:
3c² - 20c + 12

• (3c - 2)(c - 6)
• (3c - 20)(c + 12)
• (3c +12)(c + 20)
• Not Factorable

Factor by Splitting the Middle:
y² - 6y + 8

• (y - 2)(y-4)
• (y - 6)(c + 8)
• (y + 8)(y - 6)
• Not Factorable

Factor by Splitting the Middle:
2k² - 7k + 3

• (2k - 1)(k - 3)
• (2k - 7)(k + 3)
• (2k + 3)(k - 7)
• Not Factorable

Factor by Splitting the Middle:
3y² - 2y - 8

• (3y + 4)(y - 2)
• (3y - 2)(y - 8)
• (3y - 8)(y - 2)
• Not Factorable

Factor by Splitting the Middle:
b² - 2b - 3

• (b + 1)(b - 3)
• (b - 2)(b - 3)
• (b - 3)(b - 2)
• Not Factorable

Factor by Splitting the Middle:
10x² - 3x - 1

• Mr. Segovia says the answer is
  (2x - 1)(5x + 1)
• (10x - 3)(x - 1)
• (3x - 1)(x - 10)
• Not Factorable

Factor by Splitting the Middle:
x² + 4x - 5

• (x + 5)(x - 1)
• (x - 5)(x + 4)
• (x - 4)(x - 5)
• Not Factorable

x² +11x+30

x²+18x+32