Question

2х-(5х+ 4)² помогите пожалуйста

Answer 1

2х-(5х+4)2=2х-25х+40х+16=17х+16

Answer 2

Calculating the Expression 2x-(5x+4)²

To calculate the expression 2x-(5x+4)², we can follow the order of operations, which is parentheses, exponents, multiplication and division (from left to right), and addition and subtraction (from left to right).

First, let's expand the squared term and then simplify the expression step by step.

1. Expand the squared term: - (5x+4)² = (5x+4)(5x+4) = 25x² + 20x + 20x + 16 = 25x² + 40x + 16

2. Substitute the expanded term back into the expression: - 2x - (25x² + 40x + 16)

3. Combine like terms: - 2x - 25x² - 40x - 16

4. Rearrange the terms: - -25x² - 38x - 16

So, the simplified form of the expression 2x-(5x+4)² is -25x² - 38x - 16.

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