Question

tính nhanh 2,34 x 2 + 4,68 x 2 + 7,02 x 2 - 4,68 
giúp mik nha mn! thanks

Answer 1

\(=2.34\left(2+2\cdot2+3\cdot2-2\right)=2.34\cdot10=23.4\)