Finding X in Polynomial

What are the x-intercepts of the following function. 
f(x) = 4x(x + 7)(x - 3)(x + 2)

• 0, -7, 3 and - 2

• 0, 7, -3 and 2

• -7, 3, -2

• 4, -7, 3, -2

Find all the zeros, given that f(-3) = 0
f(x) = 2x³+5x²-6x-9

• -1,-3,-3

• -1,-3,3/2

• 3,3,3

• -3,2/3,-1

after you plug in zero for y when finding x-intercepts then you first try to...

• simplify

• factor

• ignore the constant

Select ALL the linear factors of the polynomial function whose zeros are -2 and 6.

• (x+2)

• (x-2)

• (x+6)

• (x-6)

What are all the x-intercepts?

• (-2.55, 0), (2.55, 0)

• (-3,0), (-2,0), (2,0), (3,0)

• (0, 36)

• (-∞,∞)

What are the x-intercepts of the polynomial
y = 3 (x + 4) (x + 1) (x - 3)?

• -4, -1, 3

• 3, -3, 4, 1

• 4, 1, -3

• 3, -4, -1, 3

What are the x-intercepts of the graph of y = (3x + 8)(5x - 3)(x - 1)?

• -8/3, 3/5, -1

• 8/3, -3/5, 1

• 8/3, 3/5, -1

• -8/3, 3/5, 1

What are the x-intercepts?

2(x + 5)(x + 1) = 0

• x = 0, 5, 1

• x = 0, - 5, -1

• x = 5, 1

• x = -5, -1