dianabran dianabran
  • 19-03-2021
  • Mathematics
contestada

solve x^2 - 3x - 10 = 0

Respuesta :

lak521
lak521 lak521
  • 19-03-2021

Answer:

5 and -2

Step-by-step explanation:

[tex] {x}^{2} - 3x - 10 = 0[/tex]

[tex] {x}^{2} - 5x + 2x - 10 = 0[/tex]

[tex]x(x - 5) + 2(x - 5) = 0[/tex]

[tex](x - 5)(x + 2) = 0 [/tex]

[tex]x - 5 = 0[/tex]

[tex]x = 5[/tex]

or

[tex]x + 2 = 0[/tex]

[tex]x = - 2[/tex]

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