Is x=-3, solutions of the equation 2X²+5X-12=0
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Step-by-step explanation:
→ 2x² + 5x - 12
→ 2(-3) ² + 5(-3) - 12
→ 2(9) + (-15) - 12
→ 18 - 15 - 12
→ 18 - 27
→ -9
-3 is not a solution of 2x²+5x-12
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