1)0.2*60+1/2*4=12+2=14
2)√0.04 × 64 = 1.6
3)√(54 × 72)= √3888
4) √(2 × 50) - √(89)= 10-9=1
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1)0.2*60+1/2*4=12+2=14
2)√0.04 × 64 = 1.6
3)√(54 × 72)= √3888
4) √(2 × 50) - √(89)= 10-9=1