1. (7/2)²= 7/2•7/2= 49/4=12 1/4
2. (16/5)²= 16/5•16/5=256/25= 10 6/25
3. 12 1/4 - 10 6/25= [(12-10)+(1/4-6/25)]= 12+ 25/100- 24/100= 12 1/100
4. 2²= 2•2=4
5. 12 1/100 • 2= 1201/100 • 2 = 1201/200 = 6 1/200
6. 6 1/200 - 4= 2 1/200
Fuh....