Respuesta :

Centio33

Answer:

x=-6,x=-4

Step-by-step explanation:

x^2+21=-10x-3

Take all terms to one side

x^2+21+10x+3=0

x^2+10x+24=0

x^2+4x+6x+24=0

x(x+4)+6(x+4)=0

(x+6)(x+4)=0

x+6=0,x+4=0

x=-6,x=-4

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