Question

Factor: 5x^2 – 15x – 20​

Answer 1

Answer:

5x2 – 15x – 20

5x2 – 15x – 20

= 5(x2 – 3x – 4)

5x2 – 15x – 20

= 5(x2 – 3x – 4)

= 5(x2 – 4x + x – 4)

5x2 – 15x – 20

= 5(x2 – 3x – 4)

= 5(x2 – 4x + x – 4)

= 5{x(x - 4) +1(x - 4)}

5x2 – 15x – 20=

5(x2 – 3x – 4)

= 5(x2 – 4x + x – 4)

= 5{x(x - 4) +1(x - 4)}

= 5(x-4)(x+1)

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Answer 2

Answer:

$= 5 {x}^{2} - 15x - 20 \\ = 5 {x}^{2} + 5x - 20x - 20\\ = 5x(x + 1) - 20(x + 1) \\ = (5x - 20)(x + 1)$

Step-by-step explanation:

Hope it helps you out......