*2x² + 5x – 7 = 0 या वर्गसमीकरणाच्या मुळांचा गुणाकार …………. आहे*
1️⃣ 5/2
2️⃣ -7/2
3️⃣ -5/2
4️⃣ 7/2
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2x² + 5x – 7 = 0
2x² + 7x-2x-7=0
x(2x+7) -1 (2x+7)=0
(2x+7) (x-1)
2x+7=0
2×=-7
x=-7/2
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