Question

(4a-2b)-(2a+b)(3a-5b)

Answer 1

Ответ:

Объяснение:как то так

Answer 2

To simplify the given expression (4a-2b)-(2a+b)(3a-5b), we'll first expand the second term within the parentheses and then perform the subtraction. Let's go step by step:

Expression: (4a - 2b) - (2a + b)(3a - 5b)

Step 1: Expand the second term within the parentheses using the distributive property (FOIL method):

(2a + b)(3a - 5b) = 2a * 3a + 2a * (-5b) + b * 3a + b * (-5b) = 6a^2 - 10ab + 3ab - 5b^2 = 6a^2 - 7ab - 5b^2

Step 2: Substitute the expanded term back into the original expression:

(4a - 2b) - (6a^2 - 7ab - 5b^2)

Step 3: Distribute the negative sign across the terms in the second set of parentheses:

(4a - 2b) - 6a^2 + 7ab + 5b^2

Step 4: Combine like terms:

4a - 2b - 6a^2 + 7ab + 5b^2

Step 5: Rearrange the terms:

-6a^2 + 4a + 7ab - 2b + 5b^2

So, the simplified expression is:

-6a^2 + 4a + 7ab - 2b + 5b^2