tính
B=(2.4.10+4.6.8+14.16.20)/(3.6.15+6.9.12+21.24.30)
B=\(\frac{2.4.10+4.6.8+14.16.20}{3.6.15+6.9.12+21.24.30}\)
B = \(\frac{2.4.10+4.6.8+14.16.20}{3.6.15+6.9.12+21.24.30}\)
\(\frac{2.4.10+4.6.8+14.16.20}{3.6.15+6.9.12+21.24.30}\)
Tính: 2.4.10+4.6.8+14.16.20/3.6.15+6.9.12.21.24.30
Tính
B=\(\frac{2.\text{ 4}.10+\text{ 4}.6.8+1\text{ 4}.16.20}{3.6.15+6.9.12+21.\text{ 24.30}}\)
tính nhanh B= 2.4.6+4.6.8+......+96.98.100
tính nhanh:D=2.4.6+4.6.8+...+46.48.50
Tính nhanh: 5/2.4.6+5/4.6.8+5/6.8.10+...+5/20.22.24