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प्रश्न
If x = –1 is a root of the equation ax2 – bx + 3 = 0, then:
पर्याय
– a + b – 3 = 0
a – b – 3 = 0
– a – b + 3 = 0
a + b + 3 = 0
MCQ
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उत्तर
a + b + 3 = 0
Explanation:
If x = –1 is a root,
Substitute into the equation:
a(–1)2 – b(–1) + 3 = 0
⇒ a + b + 3 = 0
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