Question

(a-3b)(a+3b)(1/3-1/a)=?

Answer 1

Решение на фото будут вопросы пишите

Answer 2

To simplify the expression (a-3b)(a+3b)(1/3-1/a), we can start by expanding the product of the first two terms:

(a-3b)(a+3b) = a(a) + a(3b) - 3b(a) - 3b(3b) = a^2 + 3ab - 3ab - 9b^2 = a^2 - 9b^2

Now, the expression becomes:

(a^2 - 9b^2)(1/3 - 1/a)

To further simplify, we can find a common denominator for the fractions:

(a^2 - 9b^2)(a/(3a) - 3(1/(3a)))

Now, combine the terms:

(a^2 - 9b^2)((a - 3)/(3a))

Next, factor the difference of squares in the first term:

((a + 3b)(a - 3b)((a - 3)/(3a))

Now, you can cancel out common factors:

((a + 3b)(a - 3b))/3

So the simplified expression is:

(a + 3b)(a - 3b)/3