1-е задание:√2+√50-√18=√2+5√2-3√2=√2(1+5-3)=3√22-е задание:
2√5 = √4√5=√4*5=√20
√20 = √20
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1-е задание:
√2+√50-√18=√2+5√2-3√2=√2(1+5-3)=3√2
2-е задание:
2√5 = √4√5=√4*5=√20
√20 = √20