Question

-4(5a+3b)+5(4a-2b) if a b=-8 a=-1,2

Answer 1

Ответ:

Х=42,8

Паходу воттт такк!!!?¿

Answer 2

Ответ:

176

Пошаговое объяснение:

-20a-12b+20a-10b=-22b

-22(-8)=176

А а сокращены

Answer 3

To solve the expression $-4(5a + 3b) + 5(4a - 2b)$ for different values of $a$ and $b$, we'll evaluate it separately for each set of values.

1. When $a = -8$ and $b = -1$:

$-4(5(-8) + 3(-1)) + 5(4(-8) - 2(-1))$

$= -4(-40 - 3) + 5(-32 + 2)$

$= 157 - 150$

$= 7$

2. When $a = -8$ and $b = 2$:

$-4(5(-8) + 3(2)) + 5(4(-8) - 2(2))$

$= -4(-40 + 6) + 5(-32 - 4)$

$= 166 + (-180)$

$= -14$

3. When $a = -1$ and $b = -1$:

$-4(5(-1) + 3(-1)) + 5(4(-1) - 2(-1))$

$= -4(-5 - 3) + 5(-4 + 2)$

$= 32 + 10$

$= 42$

4. When $a = -1$ and $b = 2$:

$-4(5(-1) + 3(2)) + 5(4(-1) - 2(2))$

$= -4(-5 + 6) + 5(-4 - 4)$

$= 44 - 40$

$= 4$

5. When $a = 2$ and $b = -1$:

$-4(5(2) + 3(-1)) + 5(4(2) - 2(-1))$

$= -4(10 - 3) + 5(8 + 2)$

$= 28 + 50$

$= 78$

6. When $a = 2$ and $b = 2$:

$-4(5(2) + 3(2)) + 5(4(2) - 2(2))$

$= -4(10 + 6) + 5(8 - 4)$

$= -64 + 20$

$= -44$

So, for the given values of $a$ and $b$, the results are:

1. $a = -8$, $b = -1$: $7$
2. $a = -8$, $b = 2$: $-14$
3. $a = -1$, $b = -1$: $42$
4. $a = -1$, $b = 2$: $4$
5. $a = 2$, $b = -1$: $78$
6. $a = 2$, $b = 2$: $-44$