4 years ago

Simplify and select the answer with the appropriate restrictions for the variable. Will give Brainliest answer.

Mathematics

1 answer:

serious [3.7K]4 years ago

4 0

Answer:

[(x + 3) (x + 7)] / (3x + 21)

= [(x + 3) (x + 7)] / [3 (x + 7)]

= (x + 3) / 3

The denominator can't be equal to 0 therefore:

3 (x + 7) ≠ 0 ⇔ x + 7 ≠ 0 ⇔ x ≠ -7

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