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kayybee416 kayybee416
  • 27-02-2017
  • Mathematics
Answered

Simplify the expression


7√7 - 2√28

Verified Answer :

wolf1728
wolf1728 wolf1728
  • 27-02-2017

7√7 - 2√28


2 sqrt(28) = 4 sqrt(7)

7sqrt(7) - 4sqrt(7) =

3 sqrt(7)

Answer Link
H1a2r3s4h5 H1a2r3s4h5
  • 27-02-2017

7squareroot7-2squareroot28
=7squareroot7-2×2squareroot7
=7squareroot7-4squareroot7
=3squareroot7
=3×2.64
=7.92

Answer Link

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