A quadratic function f is defined by f (x) = (2+6) (x – 8). 1. Without graphing, identify the x-intercepts of the graph of f. Explain how you know.

2. Expand (x + 6) (2 - 8) and use the expanded form to identify the y-intercept of the graph of f. Show your work and explain how you know.

1. The x-intercepts can be determined by taking the opposite of the constants, in this case the x-ints are -6 and +8.

2. (x+6)(x-8)  =  x^2+-2x-48, the y-intercept is -48

option 3 . (5x + 1) - (-10x + 6)

step-by-step explanation:

option 1 :

(4x + 3) + (-9x + 4)

or 4x+3 -9x + 4

or -5x + 7

option 2

(x - 2) - (6x - 9)

or x-2-6x + 9

or -5x + 7

option 3

(5x+ + 6)

or 5x + 1 + 10x -6

or 15x -5

option 4

-4x+2x+7-3x

-7x + 2x + 7

-5x + 7

hence only option 3 did   not satisfy the given simplify expression.