Question

Вычислите : 129^2 - 119^2

Answer 1

a^2 - b^2 = (a - b)(a + b)

129^2 - 119^2 = (129 - 119)(129 + 119) = 10*248 = 2480

Answer 2

129^2 − 119^2 = 2 480

Answer 3

To calculate $129^2 - 119^2$, you can use the difference of squares formula $(a^2 - b^2) = (a + b)(a - b)$. In this case, $a = 129$ and $b = 119$. Let's proceed with the calculation:

$129^2 - 119^2 = (129 + 119)(129 - 119)$

$= 248 \times 10$

$= 2480$

So, $129^2 - 119^2 = 2480$.