Unformatted text preview: and to factor the quadratic if it is possible. EXAMPLE 8.16 Determine whether x 2 + x + 1 factors, and factor it if possible. The quadratic formula tells us that x 2 + x + 1 = 0 when x =1 ± √ 14 2 . Since there is no square root of3, this quadratic does not factor. EXAMPLE 8.17 Determine whether x 2x1 factors, and factor it if possible. The quadratic formula tells us that x 2x1 = 0 when x = 1 ± √ 1 + 4 2 = 1 ± √ 5 2 . Therefore x 2x1 = ˆ x1 + √ 5 2 !ˆ x1√ 5 2 ! ....
View
Full Document
 Spring '07
 JonathanRogawski
 Math, Calculus, Rational Functions, Fraction, Rational function, Square number, Quadratic polynomial

Click to edit the document details