Question

2 . (3 + 4 x)= 2 x + raíz de 84 .2 ala 2

Answer 1

2(3+4x)=2x+√[(84)(2²)]
6+8x=2x+√[(21*4)](2)
6+8x-2x=√[(21)(2²)](2)
8x-2x=√[(21)](2)(2)-6
8x-2x=√[(21)](2)(2)-6
6x=4√(21)-6
X=$\frac{4 \sqrt{21}-6 }{6}$

Answer 2

x vale 6 en la ecuacion