Question

2/3a^2-b^2+4/3a^2-5/7b^2​

Answer 1

Ответ приложен ниже

Answer 2

To simplify the expression (2/3a^2 - b^2 + 4/3a^2 - 5/7b^2), we can combine like terms.

The terms involving a^2 are (2/3a^2) and (4/3a^2). Since they have the same denominator, we can add them together:

(2/3a^2) + (4/3a^2) = (2 + 4)/(3a^2) = 6/3a^2 = 2/a^2

Now let's simplify the terms involving b^2. We have (-b^2) and (-5/7b^2). Again, since they have the same denominator, we can combine them:

(-b^2) + (-5/7b^2) = (-1 - 5/7)b^2 = (-7/7 - 5/7)b^2 = (-12/7)b^2

Now we can put the simplified terms back together:

2/a^2 - 12/7b^2

This is the simplified form of the expression (2/3a^2 - b^2 + 4/3a^2 - 5/7b^2).