anonymous
  • anonymous
Solve by factoring a) (2x -2)(x +4) = 48
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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midhun.madhu1987
  • midhun.madhu1987
(2x -2)(x +4) = 48 2(x - 1)(x + 4) = 48 (x - 1)(x + 4) = 24 Now open the bracket by applying distributive property...
anonymous
  • anonymous
I do not get how to apply distributive property to this.
midhun.madhu1987
  • midhun.madhu1987
|dw:1441083121881:dw|

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anonymous
  • anonymous
Oh okay so what would be next after that?
midhun.madhu1987
  • midhun.madhu1987
|dw:1441083951580:dw| you can factorize this quadratic equation by Quadratic formula...
anonymous
  • anonymous
How do I do Quadratic Formula?
midhun.madhu1987
  • midhun.madhu1987
|dw:1441084384187:dw| this is another method....
anonymous
  • anonymous
How did the 24 become a 0?
midhun.madhu1987
  • midhun.madhu1987
Quadratic Formula is given by: \[x = \frac{(-b \pm \sqrt{(b ^{2} - 4ac})}{ 2a } \]
midhun.madhu1987
  • midhun.madhu1987
Moved the 24 to the left side of the equation...
anonymous
  • anonymous
Oh okay was just wondering how a 0 got there instead of 24 being behind the equal sign. So what would be next?
madhu.mukherjee.946
  • madhu.mukherjee.946
did you understand?
midhun.madhu1987
  • midhun.madhu1987
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
anonymous
  • anonymous
I understood it just do not know what is next.
anonymous
  • anonymous
Oh okay thank you for your help!
midhun.madhu1987
  • midhun.madhu1987
yw :)

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