Question

$\sqrt{x} - 2 = 7$
hallar el valor de x​

Answer 1

TEMA: ECUACIONES

$\mathbb{RESOLVEMOS!!}$

SOLUCIÓN

$\\\\\LARGE\boxed{\mathbf{\sqrt{x} -2=7}}}\\\\\mathbf{\sqrt{x} -2=7}}}\\\\\mathbf{Pasamos~el~2~a~sumar~a~la~derecha}}}\\\\\mathbf{\sqrt{x} =7 + 2}}}\\\\\mathbf{\sqrt{x} =9}}}\\\\\mathbf{La~raiz~de~x~lo~pasamos~como~potencia~al~9}\\\\\mathbf{x=9^2}}}\\\\\Large\boxed{\mathbf{x=81}}}$

COMPROBACIÓN

$\\\\\LARGE\boxed{\mathbf{\sqrt{x} -2=7}}}\\\\\mathbf{Vamos~a~reemplazar~25~en~x}\\\\\mathbf{\sqrt{25} -2=7}}}\\\\\mathbf{9 -2=7}}}\\\\\mathbf{7=7}}}$

RPTA: X = 81

ᗩTTE: ᗰIᖇOKᑌ[̲̅2][̲̅4]