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banana4256
banana4256 banana4256
  • 12-09-2016
  • Mathematics
Answered

Can you please help me with 7,8, and 9 :)

Can you please help me with 7,8, and 9 :) class=

Verified Answer :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 18-09-2016

\(x^2+7x=-12\\x^2+7x+12=0\\x^2+3x+4x+12=0\\x(x+3)+4(x+3)=0\\(x+4)(x+3)=0\\x=-4\ and \ x=-3\)

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