Question

4x²=6x

5x²=123

3x²-8x=0

Necesito resolverlas ayuden por fa es para mañana ploxi

Answer 1

SOLUCIÓN

Hola!!

a)

                               $\mathrm{4x^{2} = 6x}}\\\\\mathrm{4x^2 - 6x = 0}\\\\\mathrm{x(4x-6) =0}\\\\\mathrm{x = 0} \: \: \: o \: \: \: \mathrm{4x-6=0}\\\\\boxed{\boldsymbol{\mathrm{x =0}}} \: \: \: o \: \: \: \boxed{\boldsymbol{\mathrm{x = \dfrac{3}{2}}}}$

b)

                              $\mathrm{5x^{2} = 123}}\\\\\mathrm{x^2 = \dfrac{123}{5}}\\\\\mathrm{x=\pm \sqrt{\dfrac{123}{5}}}\\\\\boxed{\boldsymbol{\mathrm{x =\sqrt{\dfrac{123}{5}}}}} \: \: \: o \: \: \: \boxed{\boldsymbol{\mathrm{x = -\sqrt{\dfrac{123}{5}}}}}$

c)

                             $\mathrm{3x^2 - 8x = 0}\\\\\mathrm{x(3x-8) =0}\\\\\mathrm{x = 0} \: \: \: o \: \: \: \mathrm{3x-8=0}\\\\\boxed{\boldsymbol{\mathrm{x =0}}} \: \: \: o \: \: \: \boxed{\boldsymbol{\mathrm{x = \dfrac{8}{3}}}}$