Question

1 Решить уравнение: (2x + 5)² - (2x - 1)(2x + 1) = 54СРОЧНО​

Answer 1

Объяснение:

(2х+5)2-(2х-1)(2х+1)=54

4х2+20х+25-4х2-2х+2х-1=54

20х=80

х=80:20

х=4

Answer 2

I can help you solve the equation. First, let's expand the brackets and simplify the equation:

$$(2x+5)^2 - (2x-1)(2x+1) = 54$$ $$4x^2 + 20x + 25 - 4x^2 - 4x + 1 = 54$$ $$16x + 26 = 54$$

Next, let's subtract 26 from both sides and divide by 16:

$$16x = 54 - 26$$ $$x = \frac{28}{16}$$ $$x = \frac{7}{4}$$

Therefore, the solution is $x = \frac{7}{4}$. I hope this helps.Ответь+подробно.++1+Решить+уравнение:+(2x+++5)²+-+(2x+-+1)(2x+++1)+=+54СРОЧНО​+