danielthomasgreenwoo danielthomasgreenwoo

21-08-2020
Mathematics

contestada

Factor: a² + 9a+20
A
(a-4)(-5)
B (a+2)(a +10)
C (-2)(a-10)
D (a+4)(a +5)

Respuesta :

bryanzavala133 bryanzavala133

21-08-2020

Answer: is D

Answer is D

Answer Link

khalidtauhid9 khalidtauhid9

21-08-2020

Using the simple method of quadratic expression:

we find two numbers(the first and last word) that when we multiply is the same as when we add them together.

a²+9a+20

a²+4a+5a+20

The answer is D

a(a+4)+5(a+4)

(a+4)(a+5)

Answer Link

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