Question

3) 2 (k-7)(k+5)-(k-5)²-(k-7) (7+k), пpи k=- 0,1 ​

Answer 1

ответ: ответ в закрепе^^^^^^^^^^^^^^^^^^

Answer 2

To evaluate the expression 2(k-7)(k+5) - (k-5)² - (k-7)(7+k) when k = -0.1, we substitute the value of k into the expression and perform the calculations.

Let's substitute k = -0.1 into the expression:

2(-0.1 - 7)(-0.1 + 5) - (-0.1 - 5)² - (-0.1 - 7)(7 + (-0.1))

Simplifying each term:

= 2(-7.1)(4.9) - (-5.1)² - (-7.1)(6.9) = -14.2(4.9) - 26.01 - (-49.39) = -69.58 - 26.01 + 49.39 = -46.59

Therefore, when k = -0.1, the expression 2(k-7)(k+5) - (k-5)² - (k-7)(7+k) evaluates to -46.59.