## anonymous one year ago Solve by factoring a) (2x -2)(x +4) = 48

(2x -2)(x +4) = 48 2(x - 1)(x + 4) = 48 (x - 1)(x + 4) = 24 Now open the bracket by applying distributive property...

2. anonymous

I do not get how to apply distributive property to this.

|dw:1441083121881:dw|

4. anonymous

Oh okay so what would be next after that?

6. anonymous

How do I do Quadratic Formula?

|dw:1441084384187:dw| this is another method....

8. anonymous

How did the 24 become a 0?

Quadratic Formula is given by: $x = \frac{(-b \pm \sqrt{(b ^{2} - 4ac})}{ 2a }$

Moved the 24 to the left side of the equation...

11. anonymous

Oh okay was just wondering how a 0 got there instead of 24 being behind the equal sign. So what would be next?

did you understand?

Now we have factored till (x-4)(x+7)=0 So, either x - 4 = 0 OR x + 7 = 0 The values of x are: x = 4 or x = -7

14. anonymous

I understood it just do not know what is next.

15. anonymous

Oh okay thank you for your help!