Q:

What is the positive solution to the equation 0 = –x2 + 2x + 1? Quadratic formula: x = StartFraction negative b plus or minus StartRoot b squared minus 4 a c EndRoot Over 2 a EndFraction –2 + StartRoot 2 EndRoot 2 – StartRoot 2 EndRoot 1 + StartRoot 2 EndRoot –1 + StartRoot 2 EndRoot

Accepted Solution

A:
Answer:See attached for a "Neat" quadratic formula.a = -1b = 2c = 1x = [-2 +- sqr root( 4 -4*-1*1)] / -2x = [-2 +- sqr root( 4 -4*-1*1)] / -2x = [-2 +- sqr root(8)] / -2x1 = (-2 +2.8284271247)  / -2x1 = .8284271247 / -2 x1 = -0.41421x2 = (-2 -2.8284271247)  / -2 x2 = ( -4.8284271247)  / -2x2 = 2.4142135624 So the equation has the positive solution of2.4142135624 Step-by-step explanation: