Question

Сравните значение выражения -0,4(y+0,4) и (y-0,4)y+0,4 при y=0,5С объяснением!!!!! даю 99баллов

Answer 1

Сделаем это просто напросто подставив вместо y=0.5
(1) -04(0,5+0,4)=-0,4*0,9=-0,36
(2) (0,5-0,4)*0,5+0,4=0,1*0,5+0,4=0,5+0,4=0,9
Теперь сравним
-0,36 и  0,9
-0.36 < 0.9 ( т.к. 0,9 положительное, а -0,36 отриц)

Answer 2

Comparing the expressions -0.4(y+0.4) and (y-0.4)y+0.4 when y=0.5

To compare the expressions -0.4(y+0.4) and (y-0.4)y+0.4 when y=0.5, we can substitute the value of y into each expression and simplify them.

Let's start with the expression -0.4(y+0.4):

-0.4(y+0.4) = -0.4(0.5+0.4) = -0.4(0.9) = -0.36

Now, let's evaluate the expression (y-0.4)y+0.4:

(y-0.4)y+0.4 = (0.5-0.4)0.5+0.4 = (0.1)0.5+0.4 = 0.05+0.4 = 0.45

Therefore, when y=0.5, the expression -0.4(y+0.4) evaluates to -0.36, and the expression (y-0.4)y+0.4 evaluates to 0.45.

So, the values of the two expressions are different.