Question

(x +7)²+3=19
me ayudan porfi
4x²-7=29
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Answer 1

Respuesta:

(x+7)²+3=19

x²+49+3=19

x²+52=19

x²=19-52

x²=-33

x=√-33 no existe

4x²-7=29

  4x²=36

    x²=36/4

     x²=9

      x=±√9

x₁=3

x2=-3