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Buna am si eu o problema ! Help my!!! √5•√25+√7•√49-√9•√16=

Răspuns :

√5 * √25 + √7 * √49 - √9 * √16 =
√5 * 5 + √7 * 7 - 3 * 4 =
5√5 + 7√7 - 12
=5√5+7√7-3·4
=5√5+7√7-12
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