Question

(3a-0,5b)²=9a²-*+0,25b²​

Answer 1

Ответ:

${(3a - 0.5b)}^{2} = 9 {a}^{2} - 3ab + 0.25 {b}^{2}$

Answer 2

It seems like you want to simplify the expression (3a - 0.5b)². To do this, you can use the formula for squaring a binomial:

(a - b)² = a² - 2ab + b²

In your case, a = 3a and b = 0.5b. So, we can apply this formula:

(3a - 0.5b)² = (3a)² - 2(3a)(0.5b) + (0.5b)²

Now, let's calculate each term:

(3a)² = 9a² 2(3a)(0.5b) = 3ab (0.5b)² = 0.25b²

Now, plug these values back into the expression:

(3a - 0.5b)² = 9a² - 3ab + 0.25b²

So, the simplified form of (3a - 0.5b)² is:

9a² - 3ab + 0.25b²