help me this math 1+2*2^2+3*2^2 calt with fast 12/08/2021 Bởi Adalyn help me this math 1+2*2^2+3*2^2 calt with fast
1 + 2 * `2^2` + 3 * `2^2`
= `2^2` * ( 2 + 3 ) + 1
= 4 * 5 + 1
= 20 + 1
= 21
1 + 2 . 2² + 3 . 2² = 1 + 2².(2+3)
= 1 + 2².5
= 1 + 4.5
= 1 + 20 =21