Question

Plz help idu! I will give brainliest just please help!!

Answer 1

Answer:

1

x  = 0, x = 3

2

x = -3, x = 3

3

x = -2/3, x = 1

4

x = -1, x = 1, x = -3/2

Step-by-step explanation:

1

3x^2 - 9x = 0

3x(x - 3) = 0

when 3x = 0, x  = 0

when x - 3 = 0, x = 3

2

x^2 - 9 = 0

(x - 3)(x + 3)

when x + 3 = 0, x = -3

when x - 3 = 0, x = 3

3

3x^2 - x = 2

3x^2 - x - 2 = 0

(3x + 2)(x - 1 ) = 0

when 3x + 2 = 0, 3x = -2, x = -2/3

when x - 1 = 0, x = 1

4

2x(x^2 - 1) + 3(x^2 - 1) = 0

2x^3 - 2x + 3x^2 - 3 = 0

2x^3 + 3x^2 - 2x - 3 = 0

(x + 1)(x - 1)(2x + 3) = 0

when x + 1 = 0, x = -1

when x - 1 = 0, x = 1

when 2x + 2 = 0, 2x = -3, x = -3/2