Question

(x-3y) (x+3y) стандартный вид нужен

Answer 1

Х²-9у²
Формула сокращённого умножения

Answer 2

Simplifying the Expression (x-3y) + (x+3y)

To simplify the expression (x-3y) + (x+3y), we can combine like terms.

The expression can be rewritten as:

2x + 0y

Since the coefficient of y is 0, the term involving y cancels out. Therefore, the simplified form of the expression is 2x.

Verification

We can verify this simplification by substituting values for x and y into the original expression and the simplified expression and comparing the results.

Let's assume x = 5 and y = 2.

Original expression: (5-3*2) + (5+3*2) = (5-6) + (5+6) = -1 + 11 = 10

Simplified expression: 2*5 = 10

As we can see, both the original expression and the simplified expression yield the same result of 10. Therefore, the simplification is correct.