jmr45636 jmr45636

12-03-2020
Mathematics

contestada

Factor completely.
x2 + 4x – 21
Enter your answer in the box.

Respuesta :

devishri1977 devishri1977

12-03-2020

Answer:

Step-by-step explanation:

x² + 4x -21 = x² + 7x - 3x -3*7

= x*(x + 7) -3(x + 7)

=(x + 7)*(x-3)

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AnthonyFleming AnthonyFleming

18-03-2020

Answer:

(x+7)(x-3)

Step-by-step explanation:

You can factor this trinomial into two binomials. 7 * -3 multiply together to form -21 and they add together to form 4.

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