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प्रश्न
One of the roots of equation x2 + 5x + a = 0 is – 3. To find the value of a, fill in the boxes.
Since, `square` is a root of equation x2 + 5x + a = 0
∴ Put x = `square` in the equation
⇒ `square^2 + 5 xx square + a` = 0
⇒ `square + square + a` = 0
⇒ `square + a` = 0
⇒ a = `square`
उत्तर
Since, – 3 is a root of equation x2 + 5x + a = 0
∴ Put x = – 3 in the equation
⇒ – 32 + 5 × – 3 + a = 0
⇒ 9 + – 15 + a = 0
⇒ – 6 + a = 0
⇒ a = 6
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