а) 9V147 - 11V48 = 3V49 - 3V48 = 3V1 = 3б) 2,5V125 + 7V80 - 12V5 = 5V25 + 2V40 - 12V5 = 5V25 + 2V8 = 55 + 22√2 = 25 + 4√2 = 25 + 4√2в) (17 - 4V7)(4V7 + 17) = 174√7 + 1717 - 4*7 = 68√7 + 289 - 28 = 68√7 + 261
а) 9V147 - 11V48 = 3V49 - 3V48 = 3V1 = 3
б) 2,5V125 + 7V80 - 12V5 = 5V25 + 2V40 - 12V5 = 5V25 + 2V8 = 55 + 22√2 = 25 + 4√2 = 25 + 4√2
в) (17 - 4V7)(4V7 + 17) = 174√7 + 1717 - 4*7 = 68√7 + 289 - 28 = 68√7 + 261