Pa Help Po Pls Thankyou (Nonsense Answers Will Be Reported)

Pa help po pls thankyou (nonsense answers will be reported)

 

Answer:

1. (4x - 5)(x - 3)

first: 4x × x = 4x²

outside: 4x × (-3) = -12x

inside: -5 × x = -5x

last: -5 × (-3) = 15

4x² - 12x - 5x + 15

= 4x² - 17x + 15 (B)

2. (4x - 4)(x - 4)

first: 4x × x = 4x²

outside: 4x × (-4) = -16x

inside: -4 × x = -4x

last: -4 × (-4) = 16

4x² - 16x - 4x + 16

= 4x² - 20x + 16 (D)

3. (2x + 2)(3x + 5)

first: 2x × 3x = 6x²

outside: 2x × 5 = 10x

inside: 2 × 3x = 6x

last: 2 × 5 = 10

6x² + 10x + 6x + 10

= 6x² + 16x + 10 (A)

4. (4x - 2)(3x + 3)

first: 4x × 3x = 12x²

outside: 4x × 3 = 12x

inside: -2 × 3x = -6x

last: -2 × 3 = -6

12x² + 12x - 6x - 6

= 12x² + 6x - 6 (C)

5. (x - 1)(2x + 5)

first: x × 2x = 2x²

outside: x × 5 = 5x

inside: -1 × 2x = -2x

last: -1 × 5 = -5

2x² + 5x - 2x - 5

= 2x² + 3x - 5 (E)