mialynakuma16 mialynakuma16
  • 06-02-2018
  • Mathematics
contestada

Which expression is equal to 7√28-5√63
A:-√7
B:-37√7
C:-11√7
D:√7

Respuesta :

zrh2sfo
zrh2sfo zrh2sfo
  • 06-02-2018
The Answer is A: -√7
Answer Link
Аноним Аноним
  • 06-02-2018
sqrt 28  = 2 sqrt7
and sqrt 63 = 3 sqrt7
so  answer is 14 sqrt7 - 15 sqrt 7

= - sqrt 7

Its A
Answer Link

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