Question

(3 - х)(3 + х) – х(5 - х)

Answer 1

Ответ:

(3-х)(3+х)-х(5-х)

Сократить противоположные выражения

9-х^2-5х+х^2

Ответ:

9-5х

Answer 2

Если нужно решить уравнение, то вот.

(3-x)(3+x) - x(5-x) = x²-9 - 5x-x²

5x-9 = 0

5x=9

x = 9/5

x = 1,8

Answer 3

To simplify the expression (3 - x)(3 + x) - x(5 - x), we can expand it using the distributive property and then combine like terms. Let's go step by step:

(3 - x)(3 + x) - x(5 - x)

Expanding the first set of parentheses: = 3 * 3 + 3 * x - x * 3 - x * x

Simplifying: = 9 + 3x - 3x - x^2

Combining like terms: = 9 - x^2

So, the simplified expression is 9 - x^2.