mileidis mileidis

10-09-2020
Mathematics

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When factored, the trinomials x2 + 4x − 21 and x2 + 11x + 28 have one binomial factor in common. What is this factor?

x − 7
x + 7
x − 5
x + 5

Helpppppp

Respuesta :

mathstudent55 mathstudent55

10-09-2020

Answer:

x + 7

Step-by-step explanation:

x^2 + 4x − 21 =

= (x + 7)(x - 3)

x^2 + 11x + 28 =

= (x + 4)(x + 7)

Answer: x + 7

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