2 16 ⎜ 6 ⎟ 36 ⎝ ⎠ − + = + 1 1 3 x2 x 1 1 7 7 6 2 16 16 16 = ± 36 6 + = ± x − x 1 ⎞2 1 ⎝ ⎟ = = −1 ± 7 x ⎠ 4 6 and − 1 = x ( ) = ± 1 1 are The zeros of = 3x2 + − −1 − 7 ± F x x 1 4 4 2 2 6 = 1 ± 1 x 4 2 . The of the graph of are x-intercepts F −1 + 7 6 = 3 x −1 − 7 and . −1 + 7 6 = − or 1 x 6 4 4 ( ) The zeros of = − 1 − 3 g x x2 x 2 16 − and 3 . are 1 4 4 The of the graph of are − 1 x-intercepts g 4 and 3 . 4
2 16 ⎜ 6 ⎟ 36 x2 − 1 x + 1 = 3 + 1 ⎝ ⎠ 1 7 7 2 16 16 16 x + = ± 6 = ± 36 6 x − ⎝ 1 ⎞2 1 ⎟ = ⎠ 4 x = −1 ± 7 6 x − 1 = ± 1 = ± 1 The zeros of F ( x ) = 3x2 + x − 1 are −1 − 7 and 4 4 2 2 6 x = 1 ± 1 4 2 −1 + 7 . The x-intercepts of the graph of F are 6 x = 3 or x = − 1 −1 − 7 6 and −1 + 7 . 6 4 4 The zeros of g ( x ) = x2 − 1 x − 3 2 16 are − 1 4 and 3 . 4 The x-intercepts of the graph of g are − 1 4 and 3 . 4
Downloadable-Solution-Manual-for-Precalculus-Concepts-Through-1.docx