SOLUTION: Solve using the quadratic formula. Then use a calculator to approximate to three decimal places the solutions as rational numbers. X^2-4x+1=0

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Solve using the quadratic formula. Then use a calculator to approximate to three decimal places the solutions as rational numbers. X^2-4x+1=0       Log On


   

Question 426562: Solve using the quadratic formula. Then use a calculator to approximate to three decimal places the solutions as rational numbers. X^2-4x+1=0
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi

Solving using the quadratic formula

 x^2-4x+1=0      | Note general form: ax^2 +bx + c = 0

x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+

x+=+%284+%2B-+sqrt%28+12%29%29%2F%282%29+

x+=+%284+%2B-+sqrt%28+4%2A3%29%29%2F%282%29+

x+=+%284+%2B-+2%2Asqrt%28+3%29%29%2F%282%29+

x+=++2+%2B-+sqrt%28+3%29

 x = 3.732

 x = .268