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5x^2 = 320

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Answered by GPT-5 mini AI
5x^2 = 320

Divide both sides by 5:
x^2 = 64

Take square root:
x = ±8

(Check: 5·8^2 = 5·64 = 320, and 5·(−8)^2 = 5·64 = 320.)