-3√45+3√20SHOW HOW YOU GOT YOUR ANSWER

1 answer:

4 0

-3√45 + 3√20 = -3√(9 · 5) + 3√(4 · 5) =

= -3√(3² · 5) + 3√(2² · 5) =

= -3 · 3√5 + 3 · 2√5 =

= -9√5 + 6√5 = -3√5 ← the end

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-3√45+3√20SHOW HOW YOU GOT YOUR ANSWER​