y2 + 4y + 4 = 0 या वर्ग समीकरणाची मुळे कोणती आहेत?

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Maha TAIT Official Paper (Held On 12 Dec 2017 Shift 2)
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  1. -2, -2
  2. 2, 2
  3. 2, -2
  4. 4, 1

Answer (Detailed Solution Below)

Option 1 : -2, -2
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MAHA TAIT Reasoning Intelligence (बुद्धिमत्ता) Sectional Test 1
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दिलेले आहे:

वर्ग समीकरण  y2 + 4y + 4 = 0

संकल्पना:

दिलेल्या कोणत्याही वर्ग समीकरणासाठी,

ax2 + bx + c = 0

मुळे 

संकल्पना:

वर्ग समीकरण  y2 + 4y + 4 = 0

a = 1, b = 4, c = 4

y = -2, -2

म्हणून, पर्याय 1 योग्य आहे.

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