gabrielaromero2 gabrielaromero2
  • 04-06-2019
  • Mathematics
contestada

Simplify Radicals
What is the difference of 25√7 - 2√63

Respuesta :

mathstudent55
mathstudent55 mathstudent55
  • 04-06-2019

Answer:

[tex] 19\sqrt{7} [/tex]

Step-by-step explanation:

[tex] 25\sqrt{7} - 2\sqrt{63} = [/tex]

[tex] = 25\sqrt{7} - 2\sqrt{9 \times 7} [/tex]

[tex] = 25\sqrt{7} - 2\sqrt{9} \sqrt{7} [/tex]

[tex] = 25\sqrt{7} - 2\times 3 \sqrt{7} [/tex]

[tex] = 25\sqrt{7} - 6 \sqrt{7} [/tex]

[tex] = 19\sqrt{7} [/tex]

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