If $$y^2$$ + 3y - 18 ≥ 0, which of the following is true?

Name: If y^2 + 3y - 18 ≥ 0, which of the following is true?
Uploaded: March 25, 2021, 9:45 a.m.
Duration: 1 min 57 s
Description: If y^2 + 3y - 18 ≥ 0, which of the following is true?

Solution

$$y^2 + 3y - 18 \geq 0$$

$$\Rightarrow y^2 + 6y - 3y - 18 \geq 0$$

$$\Rightarrow y (y+6) - 3 (y+6) \geq 0$$

$$\Rightarrow (y-3) (y+6) \geq 0$$

$$\Rightarrow y\geq3 and y\leq-6$$

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CAT Content

CMAT 2018 Slot 1 Question 6

If $$y^2$$ + 3y - 18 ≥ 0, which of the following is true?

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