1) 23,98
2) 54
3) 46,4
4) 39,8
Объяснение:
1) 12,49²-11,49² = (12,49-11,49)(12,49+11,49) = 1*23,98 = 23,98
2) 27,5²-26,5² = (27,5-26,5)(27,5+26,5) = 1*54 = 54
3) 7,32²-2,68² = (7,32-2,68)(7,32+2,68) = 4,64*10 = 46,4
4) 6,99²-3,01² = (6,99-3,01)(6,99+3,01) = 3,98*10 = 39,8
1) 23,98
2) 54
3) 46,4
4) 39,8
Объяснение:
1) 12,49²-11,49² = (12,49-11,49)(12,49+11,49) = 1*23,98 = 23,98
2) 27,5²-26,5² = (27,5-26,5)(27,5+26,5) = 1*54 = 54
3) 7,32²-2,68² = (7,32-2,68)(7,32+2,68) = 4,64*10 = 46,4
4) 6,99²-3,01² = (6,99-3,01)(6,99+3,01) = 3,98*10 = 39,8