Question

\(\dfrac{6^3+2.6^2+2^3}{74}\)

Answer 1

\(\dfrac{6^3+2.6^2+2^3}{74}\) = \(\dfrac{2^3.3^3+2.2^2.3^2+2^3}{74}=\dfrac{2^3\left(3^3+3^2+1\right)}{74}=\dfrac{8.37}{74}=\dfrac{8}{2}=4\)

Answer 2

6^3+2*6^2+2^3=6^2(6+1+1)+2^3=6^2*8+8=8(6^2+1)

8(36+1)=8*37(1)

74=2*37(2)

lấy (1)/(2)=>8*37/2*37=8/2=4

bài này so easy if you are lazy, you can use caculator

good luck