Question

x²+2x-9=0 quadratic eqn​

Answer 1

Answer is given bellow:-

In the equation x2−2x+9=0 , the coefficients are rational but as the discriminant is (−2)2−4×1×9=4−36=−32 is negative, the roots of the equation are pair of complex conjugate numbers. Hence, we can use quadratic formula to get roots. Quadratic formula gives the roots of ax2+bx+c=0 as x=−b±√b2−4ac2a .

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Answer 2

x²+2x-9=0 quadratic eqn the answer is x = 32