Question

2)8d/(a-b)*(a^2-аb)/16b при а=-76 b=45

Answer 1

Мне кажется: это верно.

-76d/90

Answer 2

To evaluate the expression 8d/(a-b)(a^2-ab)/16b when a = -76 and b = 45, we can substitute the given values into the expression and perform the calculations step by step.

Given: a = -76, b = 45

Let's substitute these values into the expression:

8d/(-76-45)*((-76)^2-(-76)45)/1645

First, let's simplify the numerator:

(-76)^2 = 5776 (-76)*45 = -3420

8d/(-76-45)(5776-(-3420))/1645

Now, let's simplify the denominator:

(-76-45) = -121 16*45 = 720

8d/-121*(5776-(-3420))/720

Next, let's simplify the subtraction in the numerator:

5776 - (-3420) = 5776 + 3420 = 9196

8d/-121*(9196)/720

Now, let's simplify the multiplication:

8d/-121 * 9196/720

To simplify further, we can cancel out common factors:

8d/-121 * 9196/720 = (8d * 9196) / (-121 * 720)

Now, let's calculate the numerator:

8d * 9196 = 73568d

The expression becomes:

(73568d) / (-121 * 720)

Now, we can perform the multiplication in the denominator:

(-121 * 720) = -87120

The final expression is:

73568d / -87120

Thus, the simplified expression is 73568d / -87120 when a = -76 and b = 45.