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Snowcat [4.5K]
3 years ago
12

Identify the factors of x2 − 4x − 21.

Mathematics
2 answers:
omeli [17]3 years ago
8 0
x^2-(7-3)x-21=0
=>x^2-7x+3x-21=0
=>x(x-7)+3(x-7)=0
=>(x+3)(x-7)=0

therefore, (x-7)(x+3) is the correct answer.
Aleksandr [31]3 years ago
8 0

Answer: the answer is A

Step-by-step explanation:

(x-7)(x+3)

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The given equation is :
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