math

math
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  • i want to go hang out with my friends but i don't understand my homework
  • whats wrong?
  • i have to factor the equation 3x2+8x-3=0
  • well to start are there any common factors?
  • no
  • 3 multiplied by 3 is 9
  • so now since a does not equal to 1 we have to multiply it to c
  • 1 and 9 should work... not -9,1... oh! 
  • 9,-1!
  • very good, now we have to find 2 numbers that multiply to 9 but add to 8
  • 3x2+9x-1x-3=0
  • yes, so we are going to replace 8 with those two numbers but still using the variable
  • 3x is a common factor on the left side and -1 is a commin factor on the right side
  • you have to split the equation down the middle, find a common factor for each side
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