( ) ( ) 16. = 0 = 0 x x 20. + 7 + 6 = 2x2 − 50 = 0 x2 x 0 ( + 6)( + H x x 2( − 25) = x2 H 0 1) = 0 + 6 = 0 x or + 1 = 2( + 5)( − 5) = 0 x x x 0 = x − + 5 = 0 5=0 y y −6 = x or −1 ( ) The of = + 7 + 6 are −6 and −1 . H x x2 x = − = 5 y y 5 −6 −1 of the graph of are and . H ( ) = − −5 The zeros of 2 50 are and 5. H x x2 ( ) 17. = 0 g x The of the graph of are −5 and 5. x-intercepts H − − = 2 5x 3 x2 The ( ) 21. = 0 g x + − 0 (2 1)( x x ( + 8) + 12 = 0 x x = 3) 0 2x + 1 = 0 + 8x + 12 = 0 − 3 = or x x2 0 1 x = 3 x ( + ( x + 2) = 0 x 6) = −6 or x = −2 x 3x2 ( ) ( of = + 8) + 12 are −6 and −2 g x x x ( ) + 2 The zeros of = 2 − 5x − 3 are − g x x2 . The of the graph of are −6 and −2 . x-intercepts g = 0 1 ( ) 2 = 0 f x 22. The of the graph of are − 1 ( x-intercepts g 18. − 4) −12 = 0 x x and 3. 2 2 ( ) = 0 f x and 3. − 4x −12 = 0 x (3x + 2)( + 1) x = 0 ( ( − 6) + 2) = 0 x x + = 3x 2 0 or + 1 = x = −2 = 6 x x 0 or 2 x = x The zeros of ( ) ( = − 4) −12 are −2 and 6. f x x x −1 The zeros of ( ) = 3x2 + 5x + 2 are −1 and f x
16. H ( x ) = 0 x2 + 7 x + 6 = 0 ( x + 6)( x + 1) = 0 20. H ( x ) = 0 2x2 − 50 = 0 2( x2 − 25) = 0 x + 6 = 0 or x + 1 = 0 2( x + 5)( x − 5) = 0 x = −6 x = −1 y + 5 = 0 or y − 5=0 The of H ( x ) = x2 + 7 x + 6 are −6 and −1 . y = − 5 y = 5 17. The of the graph of H are −6 and −1 . g ( x ) = 0 2 x2 − 5x − 3 = 0 (2 x + 1)( x − 3) = 0 21. The zeros of H ( x ) = 2 x2 − 50 are −5 and 5. The x-intercepts of the graph of H are −5 and 5. g ( x ) = 0 x ( x + 8) + 12 = 0 2x + 1 = 0 or x − 3 = 0 x2 + 8x + 12 = 0 1 x x = 3 ( x + 6) ( x + 2) = 0 x = −6 or x = −2 18. The zeros of g ( x ) = 2 x2 − 5x − 3 are − 1 2 The x-intercepts of the graph of g are − 1 2 f ( x ) = 0 3x2 + 2 = 0 and 3. and 3. 22. of g ( x ) = x ( x + 8) + 12 are −6 and −2 . The x-intercepts of the graph of g are −6 and −2 . f ( x ) = 0 x ( x − 4) −12 = 0 2 x − 4x −12 = 0 (3x + 2)( x + 1) = 0 ( x − 6) ( x + 2) = 0 3x + 2 = 0 or x + 1 = 0 x = −2 or x = 6 2 x x = −1 The zeros of f ( x ) = x ( x − 4) −12 are −2 and 6. The zeros of f ( x ) = 3x2 + 5x + 2 are −1 and
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