wade123
  • wade123
HELP WITH AN ALGEBRA QUESTION
Mathematics
jamiebookeater
  • jamiebookeater
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wade123
  • wade123
@pooja195 please help!! my last question!
welshfella
  • welshfella
the tricky part here is the second parentheses - you need to distribute -1 over the contents of this parentheses
rvc
  • rvc
when u open the brackets the sign will change

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welshfella
  • welshfella
(6x^3 - 9x^2 +7x-7)- (2x^3-10x^2-9x+9) = 6x^3 - 9x^2 + 7x - 7 - 2x^3 + 10x^2 - can you complete this line?
welshfella
  • welshfella
note that -1 * -10x^2 = + 10x^2
rvc
  • rvc
correct @wade123 All the best
welshfella
  • welshfella
yes
wade123
  • wade123
thank you !
welshfella
  • welshfella
there is an error in the last 2 terms
welshfella
  • welshfella
= 6x^3 - 9x^2 + 7x - 7 - 2x^3 + 10x^2 + 9x - 9 = 4x^3 + x^2 + 16x - 16

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