Question

Ayuda!
1.- 3x^2=12
2.- 2x^2=18
3.- 2x^2+5=8r^2-211

Answer 1

En la numero 1 x=2(raizde3)/3

Answer 2

3x^2=12
x^2=12/3
x^2=4 aplicamos raiz a ambos terminos
x=2
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2x^2=18
x^2=18/2
x^2=9 aplicamos raiz a ambos terminos
x=3
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2x^2+5=8x^2-211
2x^2-8x^2= -211-5
-6x^2= -216
x^2= -216/-6
x^2=36 aplicamos raiz a ambos terminos
x=6

saludos