If the roots of a quadratic equation are 2 and -5 then which equation is correct?
यदि quadratic equation के roots 2 और -5 हैं तो equation कौन सी होगी?
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Correct Answer
A. x² + 3x - 10 = 0 / x² + 3x - 10 = 0
ExplanationStep 1: If roots are α and β then equation is x² - (α+β)x + αβ = 0. Step 2: Sum is -3 and product is -10 so x² + 3x - 10 = 0. Step 3: Pay special attention to signs.
Step 1: roots α और β हों तो equation x² - (α+β)x + αβ = 0 होती है। Step 2: sum -3 और product -10 है इसलिए x² + 3x - 10 = 0। Step 3: signs पर खास ध्यान दें।