根号2+2倍根号2+3倍根号2=6倍根号26∫2
√2+√8+√18=√2+2√2+3√2=6√2
原式=2^(1/2)+2*2^(1/2)+3*2^(1/2) =6*2^(1/2)怕你看不懂 答案是6根号2