a=[(7^2x10^3+6^2x10^3+2x10^4-5000):5^3]:8
d) 4x[(3+3^7:3^4):10+97]-300
e) 5x[(92+2^5:2):5^2+24]-7^2
f)3^2x[(5^2-3):11]-2^4+2x10^3-(1^48)^49
tinh nhanh
B = 2/5x7 + 3/7x10 + 4/10x14 + 7/14x21 + 9/21x30
B = ?
tinh nhanh
B = 2/5x7 + 3/7x10 + 4/10x14 + 7/14x21 + 9/21x30
B = ?
-12/35 : 7/11 - 23/35 : 7/11 - 5/11
2 - 11/9 : 5/14 - 7/9 x 14/5
1/1x4 + 1/4x7 + 1/7x10 + .... + 1/2002x2005
giúp toii nha các bbii <3
A=3^2/1x4+3^2/4x7+3^2/7x10+...+3^2/97x100
2^10x13+2^10x65/2^8x10
A=7/1x9 +7/9x17+7/17x25+.....+7/81x89
B=5mũ2/1x4 +3mũ2/4x7+3mũ2+7x10+....+3mũ2/37x40
Ghi các bước tính ra ạ
Tính nhanh
A=32/1x4+32/7x10+.......+32/97x100