Question

А)(5х+4)(2х-1)б)(5х+4)(2х-1)​

Answer 1

Ответ:

10X^2+3X-4

Объяснение:

При открывании скобок каждый член уравнения перемножается.

(5X+4)(2X-1) = 10X^2 - 5X + 8X - 4 = 10X^2+3X-4

Answer 2

It appears that you have two expressions, A) and B), which are identical: (5x + 4)(2x - 1). To multiply these expressions, you can use the distributive property (FOIL method), which stands for First, Outer, Inner, Last.

Let's multiply them step by step:

A) (5x + 4)(2x - 1)

1. First: Multiply the first terms in each set of parentheses. = (5x * 2x)

2. Outer: Multiply the outer terms. = (5x * -1)

3. Inner: Multiply the inner terms. = (4 * 2x)

4. Last: Multiply the last terms in each set of parentheses. = (4 * -1)

Now, let's calculate each of these multiplications:

1. (5x * 2x) = 10x^2
2. (5x * -1) = -5x
3. (4 * 2x) = 8x
4. (4 * -1) = -4

Now, combine these results:

A) (5x + 4)(2x - 1) = 10x^2 - 5x + 8x - 4

Simplify further:

A) (5x + 4)(2x - 1) = 10x^2 + 3x - 4

So, the simplified expression is 10x^2 + 3x - 4 for both A) and B).