Question

4а*2 (5а – 36) – 5а*2 (4а + b) при а = -2, b = -3.​

Answer 1

4а*2(5а-36)-5а*2(4а+b)=8a(5a-36)-10a(4a+b)=40a^2-288a-40a^2-10ab=-298a^2b

Answer 2

Ответ:

Смотрите вложение.

~•~•~•ZLOY_TIGROVSKIY~•~•~•

Answer 3

To evaluate the expression 4a2 (5a – 36) – 5a2 (4a + b) with a = -2 and b = -3, we substitute the given values into the expression and perform the calculations.

Let's substitute a = -2 and b = -3:

4(-2)*2 (5(-2) – 36) – 5(-2)*2 (4(-2) + (-3))

Now we simplify each part of the expression step by step:

4(-2)2 = -82 = -16

5(-2) – 36 = -10 – 36 = -46

4(-2) + (-3) = -8 + (-3) = -11

-16 * -46 = 736

-5(-2)2 = 102 = 20

20 * -11 = -220

Finally, we subtract the two results:

736 - (-220) = 736 + 220 = 956

Therefore, when a = -2 and b = -3, the expression 4a2 (5a – 36) – 5a2 (4a + b) evaluates to 956.