Question

5х×4х-(4х-1) (2х+3)​

Answer 1

Пошаговое объяснение:

5х×4х-(4х-1) (2х+3)=20х^2-8х^2+10х-3=

=12х^2+10х-3

Answer 2

To simplify the expression 5x × 4x - (4x - 1)(2x + 3), we can follow the order of operations (PEMDAS/BODMAS) and apply the distributive property. Let's break it down step by step:

Step 1: Simplify the expression inside the parentheses using the distributive property. (4x - 1)(2x + 3) = 4x * 2x + 4x * 3 - 1 * 2x - 1 * 3 = 8x^2 + 12x - 2x - 3 = 8x^2 + 10x - 3

Now, the expression becomes: 5x × 4x - (8x^2 + 10x - 3)

Step 2: Multiply 5x by 4x. 5x × 4x = 20x^2

Now, the expression becomes: 20x^2 - (8x^2 + 10x - 3)

Step 3: Distribute the negative sign inside the parentheses. 20x^2 - 8x^2 - 10x + 3

Step 4: Combine like terms. (20x^2 - 8x^2) - 10x + 3 12x^2 - 10x + 3

Therefore, the simplified form of the expression 5x × 4x - (4x - 1)(2x + 3) is 12x^2 - 10x + 3.