Question

Раскрыть скобки (10х-3у)^2​

Answer 1

Ответ:

100x^2-60xy+9y^2

Пошаговое объяснение:

(10x-3y)(10x-3y)=100x^2-2*10x*3y+9y^2=100x^2-60xy+9y^2

Answer 2

To expand the expression (10x - 3y)^2, you can use the formula for squaring a binomial, which is:

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

In this case, a = 10x and b = 3y. Now, let's apply the formula:

(10x - 3y)^2 = (10x)^2 - 2(10x)(3y) + (3y)^2

Now, we'll simplify each term:

(10x)^2 = 100x^2 (since (a)^2 = a * a) 2(10x)(3y) = 2 * 10 * x * 3 * y = 60xy (since 2ab = 2 * a * b) (3y)^2 = 9y^2 (since (b)^2 = b * b)

Now, the expanded expression is:

(10x - 3y)^2 = 100x^2 - 60xy + 9y^2

So, the expanded form of (10x - 3y)^2 is 100x^2 - 60xy + 9y^2.