If the roots of a quadratic equation are 3 and -5 then which equation is correct?
यदि quadratic equation के roots 3 और -5 हैं तो equation कौन सी होगी?
Show answer and explanation
Correct Answer
A. x² + 2x - 15 = 0 / x² + 2x - 15 = 0
ExplanationStep 1: If roots are α and β then equation is x²-(sum)x+product=0. Step 2: Sum is -2 and product is -15 so x²+2x-15=0. Step 3: The sign of sum changes in the formula.
Step 1: Roots α और β हों तो equation x²-(sum)x+product=0 होती है। Step 2: sum -2 और product -15 है इसलिए x²+2x-15=0। Step 3: Sum का sign formula में बदलता है।