Question

Решить 3( а + с )*в квадрате* - 6ас

Answer 1

3(а+с)²-6ас=3(a²+2ac+c²)-6ac=3a²+6ac+3c²-6ac=3a²+3c²=3(a²+c²)

Answer 2

3(а^+2ac +c^)-6ac=3a^+6ac+3c^-6ac=3a^+3c^=3(a^+c^)
^- в квадрате