Question

The factors of x2 – 7x - 18 are: *



(x - 2)(x + 9)

(x + 2)(x - 9)

(x + 2)(x + 9)

(x - 2)(x - 9)

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Answer 1

Answer:

(x - 2)(x + 9)

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Answer 2

Solution :-

→ x² - 7x - 18

By splitting middle term

→ x² - 9x + 2x - 18

→ x ( x - 9 ) +2 ( x - 9 )

→ ( x + 2 ) ( x - 9 )

Therefore ( x + 2 ) ( x - 9 ) is the correct answer