1) \(75-\left(3.5^2-4.2^3\right)=75-\left(3.25-4.8\right)=75-\left(75-32\right)=75-43=32\)
\(2,\) \(8.6^2+\left(2^3\div4-3.5\right)=8.36+\left(8\div4-3.5\right)=288+\left(2-15\right)=288+\left(-13\right)=275\)
\(3,\) \(5^2.6-\left(9^2+121\div11\right)=25.6-\left(81+121\div11\right)=150-\left(81+11\right)=150-92=58\)
\(4,\) \(1546-\left(6^3.2+18.4\right)=1546-\left(216+72\right)=1546-288=1258\)
\(5,\) \(1459-\left(3.2^5-6.4^2\div12\right)=1459-\left(96-96\div12\right)=1459-\left(96-8\right)=1459-88=1371\)
\(6,\) \(\left(2^4+8^2\right)\div4-5=80\div4-5=20-5=15\)
\(7,\) \(4.5^2-\left(5.7^2-12\div2\right)=4.5^2-\left(245-6\right)=100-239=-139\)
\(8,\) \(7.\left(5^2-2^3\right)+5.2^2=7.17+20=119+20=139\)
\(9,\) \(6.\left(2^5-5^2\right)+8^2\div2=6.7+64\div2=42+32=74\)
\(10,\) \(5.7^2-\left(9^2.29-29.8^2\right)=5.7^2-\left[29.\left(9^2-8^2\right)\right]=5.7^2-\left(29.17\right)=245-493=-248\)
