How do you simplify $sqrt63-2sqrt28+5sqrt7$ ?

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Answer 1 · 2017-01-30T10:24:07

$4sqrt7$

$sqrt 63 -2sqrt28 +5sqrt7$

$sqrt (3*3*7) -2sqrt(2*2*7) +5sqrt7$

$3sqrt 7 -2*2*sqrt7 +5sqrt7$

$3sqrt 7 -4sqrt7 +5sqrt7$

$sqrt7(3-4+5)$

$4sqrt7 color(white)(00)"[Ans]"$

How do you simplify sqrt63-2sqrt28+5sqrt7sqrt63-2sqrt28+5sqrt7?