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प्रश्न
For the polynomial mx2 − 2x + 3 if p(−1) = 7 then find m.
उत्तर
Let p(x) = mx2 − 2x + 3
∴ p(−1) = 7
⇒ m × (−1)2 − 2 × (−1) + 3 = 7
⇒ m + 2 + 3 = 7
⇒ m = 7 − 5 = 2
Thus the value of m is 2.
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