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Serega1225
@Serega1225
December 2021
1
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Помогите пожалуйста, очень нужно
Розкласти на прості множники діленням
a)(42;105) b)(588;252) c)(680;612)
a)(42;63) b)(120;324) c)(675;945)
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prettypushkova
Verified answer
А) 42 : 2 = 21 105 : 3 = 35
21 : 3 = 7 35 : 5 = 7
7 : 7 = 1 7 : 7 = 1
42 = 2 * 3 * 7 105 = 3 * 5 * 7
b) 588 : 2 = 294 252 : 2 = 126
294 : 2 = 147 126 : 2 = 63
147 : 3 = 49 63 : 3 = 21
49 : 7 = 7 21 : 3 = 7
7 : 7 = 1 7 : 7 = 1
588 = 2 * 2 * 3 * 7 * 7 252 = 2 * 2 * 3 * 3 * 7
с) 680 : 2 = 340 612 : 2 = 306
340 : 2 = 170 306 : 2 = 153
170 : 2 = 85 153 : 3 = 51
85 : 5 = 17 51 : 3 = 17
17 : 17 = 1 17 : 17 = 1
680 = 2 * 2 * 2 * 5 * 17 612 = 2 * 2 * 3 * 3 * 17
-------------------------------------------------------------------------------------------
а) 42 : 2 = 21 63 : 3 = 21
21 : 3 = 7 21 : 3 = 7
7 : 7 = 1 7 : 7 = 1
42 = 2 * 3 * 7 63 = 3 * 3 * 7
b) 120 : 2 = 60 324 : 2 = 162
60 : 2 = 30 162 : 2 = 81
30 : 2 = 15 81 : 3 = 27
15 : 3 = 5 27: 3 = 9
5 : 5 = 1 9 : 3 = 3
120 = 2 * 2 * 2 * 3 * 5 3 : 3 = 1
324 = 2 * 2 * 3 * 3 * 3 * 3
с) 675 : 3 = 225 945 : 3 = 315
225 : 3 = 75 315 : 3 = 105
75 : 3 = 25 105 : 3 = 35
25 : 5 = 5 35 : 5 = 7
5 : 5 = 1 7 : 7 = 1
675 = 3 * 3 * 3 * 5 * 5 945 = 3 * 3 * 3 * 5 * 7
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Answers & Comments
Verified answer
А) 42 : 2 = 21 105 : 3 = 3521 : 3 = 7 35 : 5 = 7
7 : 7 = 1 7 : 7 = 1
42 = 2 * 3 * 7 105 = 3 * 5 * 7
b) 588 : 2 = 294 252 : 2 = 126
294 : 2 = 147 126 : 2 = 63
147 : 3 = 49 63 : 3 = 21
49 : 7 = 7 21 : 3 = 7
7 : 7 = 1 7 : 7 = 1
588 = 2 * 2 * 3 * 7 * 7 252 = 2 * 2 * 3 * 3 * 7
с) 680 : 2 = 340 612 : 2 = 306
340 : 2 = 170 306 : 2 = 153
170 : 2 = 85 153 : 3 = 51
85 : 5 = 17 51 : 3 = 17
17 : 17 = 1 17 : 17 = 1
680 = 2 * 2 * 2 * 5 * 17 612 = 2 * 2 * 3 * 3 * 17
-------------------------------------------------------------------------------------------
а) 42 : 2 = 21 63 : 3 = 21
21 : 3 = 7 21 : 3 = 7
7 : 7 = 1 7 : 7 = 1
42 = 2 * 3 * 7 63 = 3 * 3 * 7
b) 120 : 2 = 60 324 : 2 = 162
60 : 2 = 30 162 : 2 = 81
30 : 2 = 15 81 : 3 = 27
15 : 3 = 5 27: 3 = 9
5 : 5 = 1 9 : 3 = 3
120 = 2 * 2 * 2 * 3 * 5 3 : 3 = 1
324 = 2 * 2 * 3 * 3 * 3 * 3
с) 675 : 3 = 225 945 : 3 = 315
225 : 3 = 75 315 : 3 = 105
75 : 3 = 25 105 : 3 = 35
25 : 5 = 5 35 : 5 = 7
5 : 5 = 1 7 : 7 = 1
675 = 3 * 3 * 3 * 5 * 5 945 = 3 * 3 * 3 * 5 * 7