Question

What is the positive solution to the equation 0 = –x2 + 2x + 1?

Quadratic formula: x =

Answer 1

Please note: exponentiation needs to be expressed properly: x^2, not x2.
0 = –x2 + 2x + 1 should be 0 = –x^2 + 2x + 1.
Compare this to 0 = a x^2 + bx + c. Identify a, b and c values.,

Answer 2

yes sorry

Answer 3

i need help plz i dont understand

Answer 4

Your job is to identify the roots (solutions) of the given equation. Your quadratic formula is correct. But you need the values of the coefficients a, b and c to determine the 2 solutions using the quadratic formula.

Again, you need to compare:

0 = –x^2 + 2x + 1.
0 = a x^2 + bx + c. Identify a, b and c values.,

Hint: a=-1. What are b and c?