mike1016
mike1016
22-09-2016
Mathematics
contestada
what is the sum of sqrt 18 plus sqrt 72
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Аноним
Аноним
22-09-2016
18=2*3*3=2*3²
72=2*2*2*3*3=2³ *3²
√18+√72=√(2*3²) +√(2³ * 3²)=3√2 + 3*2√2=3√2 + 6√2=9√2
Answer: √18+√72=9√2
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