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I have to solve for b but I can't figure it out

I Have To Solve For B But I Cant Figure It Out class=

Sagot :

2b2 + 13b -7  
  b               7
 2b              -1

(b+7)(2b-1)

b=1/2 or b=-7
[tex]2b^2+13b-7=0\\\\2b^2+14b-b-7=0\\\\2b(b+7)-1(b+7)=0\\\\(b+7)(2b-1)=0\iff b+7=0\ or\ 2b-1=0\\\\\boxed{b=-7\ or\ b=0.5}[/tex]
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