Question

tính bằng cách hợp lý

a) 2^3-2^x3+2^3x88

b) 53x39+47x39-53x21-47x21

c) 1+2+3+.....+101+102

d) 5+8+11+14+.....+38+41

h) 51-49+55-53+59-57+63-61+65

k) 4^2x102-4^3x17-4^2x34

m) {[261-(36-31)^3x2]-9}x1001

n) [( 46-32)^2-(54-42)^2] x39-1872

i) [(58+72)x5-(600+45)x12

Answer 1

rắc rối quá

Answer 2

@tính bằng cách hợp lý a) 2^3-2^x3+2^3x88 b) 53x39+47x39-53x21-47x21 c) 1+2+3+.....+101+102 d) 5+8+11+14+.....+38+41 h) 51-49+55-53+59-57+63-61+65 k) 4^2x102-4^3x17-4^2x34 m) {[261-(36-31)^3x2]-9}x1001 n) [( 46-32)^2-(54-42)^2] x39-1872 i) [(58+72