alleryजब $x = 3$ हो, तो द्विघात व्यंजक $2x^2 + 5x - 4$ का मान ज्ञात कीजिए:
A25
B27
C31
D29
Answer & Solution
Correct answer: D. 29
$2 \times (3)^2 + 5 \times (3) - 4 = 2 \times 9 + 15 - 4 = 18 + 15 - 4 = 29$.
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