Question

(2-с)2-4(2-с) при c= 0,2

Answer 1

Ответ:

(2-0,2)2-4(2-0,2)=1,8*2-4*1,8=3,6-7,2=-3,6

Answer 2

To evaluate the expression (2-c)^2 - 4(2-c) when c = 0.2, we substitute the value of c into the expression and perform the calculations.

Let's substitute c = 0.2 into the expression:

(2 - 0.2)^2 - 4(2 - 0.2)

Simplifying:

(1.8)^2 - 4(1.8)

Calculating the square:

3.24 - 4(1.8)

Multiplying:

3.24 - 7.2

Subtracting:

-3.96

Therefore, when c = 0.2, the expression (2-c)^2 - 4(2-c) evaluates to -3.96.