|3x-2| ≥|x+4|
Please someone help me quick. Pls show working. You will eat brainliest and a thank for helping
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Answer:
x ≤ -1/2 or x ≥ 3
Step-by-step explanation:
|3x - 2| ≥ |x + 4|
⇔ (3x - 2)² ≥ (x + 4)²
⇔ 9x² - 12x + 4 ≥ x² + 8x + 16
⇔ 8x² - 20x - 12 ≥ 0
⇔ 2x² - 5x - 3 ≥ 0
⇔ (2x + 1)(x - 3) ≥ 0
⇔ x ≤ -1/2 (so both factors are negative) or x ≥ 3 (so both factors are positive)
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