Please help will brainlist I need his done

Work shown below!

Step-by-step explanation:

1. (x - 3)(x + 7) = 0

x - 3 = 0

Add 3 to both sides;

x = 3

x + 7 = 0

Subtract 7 from both sides;

x = -7

2. (2x + 6)(x - 1) = 0

2x + 6 = 0

Subtract 6 from both sides;

2x = -6

Divide both sides by 2;

x = -3

x - 1 = 0

Add 1 to both sides;

x = 1

3. (4x - 2)(x + 4) = 0

4x - 2 = 0

Add 2 to both sides;

4x = 2

Divide both sides by 4;

x + 4 = 0

Subtract 4 from both sides;

x = -4

4. (5x - 1)(3x + 9) = 0

5x - 1 = 0

Add 1 to both sides;

5x = 1

Divide both sides by 5;

3x + 9 = 0

Subtract 9 from both sides;

3x = -9

Divide both sides by 3;

x = -3

Step-by-step explanation:

#1 is x = 3,-7

#2 is x  =  − 3, 1

#3 is x = 1/2,-4

#4 is x = 1/5,-3

answer: it's d

step-by-step explanation:

80 the answer is 80

step-by-step explanation: