Question

Question 14. The roots of a quadratic equation 5.464 and -1.464. The roots correct to two significant places will be (1 Point) x2 - 4x - 8 = 0 * -​

Answer 1

Answer:

$\huge \boxed{\tt \red{=\cot ^{-1}\left(\frac{\sqrt{\cos ^{2} \frac{x}{2}+\sin ^{2} \frac{x}{2}+2 \sin \frac{x}{2} \cos \frac{x}{2}}+\sqrt{\cos ^{2} \frac{x}{2}+\sin ^{2} \frac{x}{2}-2 \sin \frac{x}{2} \cos \frac{x}{2}}}{\sqrt{\cos ^{2} \frac{x}{2}+\sin ^{2} \frac{x}{2}+2 \sin \frac{x}{2} \cos \frac{x}{2}}-\sqrt{\cos ^{2} \frac{x}{2}+\sin ^{2} \frac{x}{2}-2 \sin \frac{x}{2} \cos \frac{x}{2}}}\right)}}$