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

Quadratic formula: x =

–2 +
2 –
1 +
–1 +

User Gary Lyn
by
7.9k points

1 Answer

2 votes

Answer:

1±√2

Explanation:

To solve the quadratic, use the quadratic formula. Substitute a = -1, b = 2 and c = 1.

The quadratic formula is
x=(-b+/-√(b^2-4ac) )/(2a).

Substitute and you'll have:


x=(-b+/-√(b^2-4ac) )/(2a) =(-2+/-√(2^2-4(-1)(1)) )/(2(-1))=(-2+/-√(4+4) )/(-2))


(-2+/-√(8) )/(-2)=(-2+/-2√(2) )/(-2) = 1 +/- √(2)

User Sherpya
by
8.5k points

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