Question

В) (-3b — 5)(3b — 5) — 4b(b + 6), якщо b = -2;

Answer 1

(-3b — 5)(3b — 5) — 4b(b + 6)= —(3b + 5)(3b — 5) — 4b(b + 6)=—(9b² -25) — 4b² - 24b= -9b² +25 — 4b² - 24b= 25 — 13b² - 24b

якщо b = -2      25 — 13*(-2)² - 24*(-2)=25-13*4+48=25-52+48=-27+48=21

Ответ: 21

Answer 2

Ответ:

21

Объяснение:

(-3 * (-2) - 5) * (3 * (-2) - 5) - 4 * (-2) * (-2 + 6) = 1 * (-11) + 8 * 4 = -11 + 32 = 21

Answer 3

I can help you with this math problem. Here are the steps to solve it:

- First, we need to substitute b = -2 into the expression (-3b — 5)(3b — 5) — 4b(b + 6). - Then, we need to simplify the expression by using the distributive property and combining like terms. - Finally, we need to evaluate the expression to get the final answer.

Let's see how it works:

(-3b — 5)(3b — 5) — 4b(b + 6) = (-3(-2) — 5)(3(-2) — 5) — 4(-2)(-2 + 6) // Substitute b = -2 = (6 — 5)(-6 — 5) — 4(-2)(4) // Simplify = (1)(-11) — 4(-2)(4) // Simplify = -11 + 32 // Use the distributive property = 21 // Combine like terms

Therefore, the answer is 21. I hope this helps you understand the solution.Ответь подробно. В) (-3b — 5)(3b — 5) — 4b(b + 6), якщо b = -2;