Question

What is the positive solution to the equation 0 = –x2 + 2x + 1? Quadratic formula: x =
A) –2 + /2
B) 2 - /2
C) 1 + /2
D) - 1 + /2

Answer 1

To solve the roots of a quadratic equation, you use the quadratic formula:

$-b+/- \sqrt{ b^{2}-4ac }$

for a quadratic equation with a general equation:

$a x^{2} +bx+c=0$

Hence, for this problem, a = -1, b = 2 and c=1. The roots would be 2.414 and -0.414. Thus, the positive root is 2.414. There must be something wrong with your given or the choices. Just follow my given example for your guidance. 

Thank you for posting here on Brainly. Hope I was able to help.

Answer 2

Answer:

C

Step-by-step explanation:

1 + StartRoot 2 EndRoot