Question

Помогите логарифмы решить , плиз кр

Answer 1

log2 56+2log2 12 - log2 63=log2 56 + log2 12² -log2 63=
=log2 56 + log2 144 - log2 63=log2 (56.144/63)=log2 (8.144/9)=
=log2 (8.16)=log2 128=log2 2ˇ7=7

(128=2ˇ7)