Question

(√15−5√10)(√15+5√10)=?

Answer 1

Ответ:

-235

Объяснение:

По формуле: (a-b)(a+b) = a^2-b^2

15-25 умножить на 10

15-250=-235

Answer 2

Ответ:

-235

Объяснение:

Это разность квадратов

(√15)^2-(5√10)^2=15-25*10=15-250=-235

Answer 3

To simplify the expression (√15 - 5√10)(√15 + 5√10), you can use the difference of squares formula, which states that (a - b)(a + b) = a^2 - b^2.

In this case, let: a = √15 b = 5√10

Now, you can apply the difference of squares formula:

(√15 - 5√10)(√15 + 5√10) = √15^2 - (5√10)^2

Now, calculate the values:

√15^2 = 15 (5√10)^2 = 25 * 10 = 250

So, the simplified expression is:

15 - 250 = -235

Therefore, (√15 - 5√10)(√15 + 5√10) = -235.