Question

Considerando as aproximações log2= 0,3 e log3= 0,48, calcule log72

Answer 1

${2}^{3} \times {3}^{2}$
3 x log 2 + 2 × log 3
0.9+0.96
R = 1.86

Answer 2

Olá!!

$\\ \displaystyle \mathsf{\log 72 =} \\\\ \mathsf{\log (8 \cdot 9) =} \\\\ \mathsf{\log 8 + \log 9 =} \\\\ \mathsf{\log 2^3 + \log 3^2 =} \\\\ \mathsf{3 \cdot \log 2 + 2 \cdot \log 3 =} \\\\ \mathsf{3 \cdot (0,3) + 2 \cdot (0,48) =} \\\\ \mathsf{0,9 + 0,96 =} \\\\ \boxed{\mathsf{1,86}}$