Question

(x-5) ²-x²=-5????????????​

Answer 1

Ответ:

3

Объяснение:

(x-5) ²-x²=-5

х²-10х+25-х²=-5

(х² и - х² в сумме дают ноль, их вычеркиваем)

Остаётся :

-10х+25=-5

-10х=-5-25

-10х=-30

х=-30:(-10)

х=3

Answer 2

Let's solve the equation step by step:

(x - 5)² - x² = -5

First, expand the left side of the equation by using the square of a binomial formula:

(x - 5)² = x² - 10x + 25

Now, substitute this expression back into the original equation:

x² - 10x + 25 - x² = -5

Now, simplify the equation by canceling out x² terms on both sides:

-10x + 25 = -5

Next, isolate the x variable on one side of the equation by moving the constant terms to the other side:

-10x = -5 - 25

-10x = -30

Now, divide both sides by -10 to solve for x:

x = (-30) / (-10)

x = 3

So, the solution to the equation (x - 5)² - x² = -5 is x = 3.