jimoh750 jimoh750
  • 04-06-2020
  • Mathematics
contestada

a) the quadratic x^2-4x-21 can be written in the form (x+a)^2+b find the values of and and b

b) hence, or otherwise, solve the equation x^2-4x-21=0

Respuesta :

maxl14 maxl14
  • 04-06-2020
Part a. A=-2. B=-25
Part b solutions; x=7 x=-3
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