Question

Answer 1

a) \(\left(6.8^4-5.8^3+8^2\right):8^2\)

\(=\left(6.8^4:8^2\right)-\left(5.8^3:8^2\right)+\left(8^2:8^2\right)\)

\(=6.8^2-5.8+1\)

\(=6.64-40+1\)

\(=384-40+1\)

\(=344+1=345\)

Answer 2

\(a,=6\cdot8^2-5\cdot8+1=6\cdot64-40+1=345\\ b,=7\cdot5^6-8\cdot5^2+5=...\\ c,=\left(5\cdot3^4+3^5-2\cdot3^3\right):3^2=5\cdot3^2+3^3-2\cdot3=45+27-6=66\\ d,=\left(3\cdot2^4+2^6+3\cdot2^8\right):2^3=3\cdot2+2^3+3\cdot2^5=6+8+96=110\)