12-6(x+3)-7x=(x-2)(x+3) расскрыть скобки

To expand the brackets in the equation, let's use the distributive property:

12 - 6(x) - 6(3) - 7x = x(x) + x(3) - 2(x) - 2(3)

This simplifies to:

12 - 6x - 18 - 7x = x^2 + 3x - 2x - 6

Now, simplify both sides of the equation:

-6x - 7x - 6 = x^2 + x - 6

Combine like terms:

-13x - 6 = x^2 + x - 6

This is the equation after expanding the brackets.