Question

calculeaza: a)1/2 + 1/3;b) 2/3 + 3/4;c) 1/4 + 5/6;d) 5/6 + 7/9;e) 1/18 + 1/12;f) 1/3*7 la puterea 2 + 1/7*3 la puterea 2 +1/7*3 la puterea 2 + 1/3 la puterea 2*7 la putera 2;g) 1/5 + 1/ 5 la puterea 2 + 1/5 la puterea 3....... VA ROG FRUMS URGENT

Answer 1

1/2+1/3=3/6+2/6=5/6
2/3+3/4=8/12+9/12=17/12
1/4+5/6=3/12+10/12=13/12
5/6+7/9=15/18+14/18=29/18
1/18+1/12=2/36+3/36=5/36
 1/3*7 ² + 1/7*3 ² +1/7*3 ² + 1/3 ²*7²=3/21²+7/21²+7/21²+1/21²=18/21²=2/7²
1/5 + 1/ 5 ² + 1/5 ³=25/5³+5/5³+1/5³=31/5³