Operaciones con radicales[tex]9?
Operaciones con radicales [tex]9. \ sqrt{21} - 3( \ sqrt{21} + 8 \ sqrt{21} - (3 \ sqrt{2} + \ sqrt{21} )[ / tex].
En resumen
Resolver. 9√21 - 3(√21 + 8√21) - (3√2 + √21) = 9√21 - 3 √21 - 24√21 - 3√2 - √21 = (9√21 - 3√21 - 24√21 - √21) - 3√2 = √21(9 - 3 - 24 - 1) - 3√2 √21( - 28 + 9) - 3√2 = √21( - 19) - 3√2 Respuesta - 19√21 - 3√2.
Mejor respuesta
Resolver.
9√21 - 3(√21 + 8√21) - (3√2 + √21) =
9√21 - 3 √21 - 24√21 - 3√2 - √21 =
(9√21 - 3√21 - 24√21 - √21) - 3√2 =
√21(9 - 3 - 24 - 1) - 3√2
√21( - 28 + 9) - 3√2 =
√21( - 19) - 3√2
Respuesta - 19√21 - 3√2.