Question

Применить формулу разности квадратов a)(x - 13)(x+ 13), 6)(9x - y')(9x+ y'), в) (2xy - 9)(9 + 2xy) Помогите пожалуйста

Answer 1

Ответ:

а) х^2 - 13^2 = x^2 - 169

б) 81х^2 - y^2

в) 4х^2*y^2 - 81

Объяснение:

формула разности квадратов: х^2 - y^2 = (х-y) * (х+y)

подставляй ее к каждому выражению и раскрывай скобки.

Answer 2

Formula for Difference of Squares

The formula for the difference of squares is used to factorize expressions that are in the form of (a^2 - b^2). The formula states that the expression (a^2 - b^2) can be factored as (a - b)(a + b).

Let's apply the formula for difference of squares to the given expressions:

a) (x - 13)(x + 13): - Using the formula for difference of squares, we can rewrite the expression as (x^2 - 13^2). - Applying the formula, we get (x - 13)(x + 13).

b) (9x - y')(9x + y'): - Again, using the formula for difference of squares, we can rewrite the expression as (9x^2 - (y')^2). - Applying the formula, we get (9x - y')(9x + y').

c) (2xy - 9)(9 + 2xy): - This expression does not match the form of (a^2 - b^2), so we cannot directly apply the formula for difference of squares.

I hope this helps! Let me know if you have any further questions.