Question

यदि a तथा b बहुपद x²+2x+1 के शुन्यक है, तो 1/a+1/b बराबर हैं |​

Answer 1

Answer:

${x}^{2} + 2x + 1 \\ = {x}^{2} + x + x + 1 \\ = x(x + 1) + 1(x + 1) \\ = (x + 1)(x + 1) \\ a = - 1 = b \\ \frac{1}{a} + \frac{1}{b} = \frac{1}{ - 1} + \frac{1}{ - 1} = - 2$