Question

помогите решить 0.3*2.4+0.7*2.4/1.5^2-0.9^2

Answer 1

$frac{0.3*2.4+0.7*2.4}{1.5^2-0.9^2} = frac{0,72+1,68}{2,25-0,81} =frac{2,4}{1,44}$