Question

3. Решите уравнение (4х+1)2-(4x-3)(4x+3)=42​

Answer 1

Ответ:

(4x+1)2 - 16x2 - 24x - 9 = 42

16x2 + 24x + 10 = 42

16x2 + 24x - 32 = 0

(4x - 8)(4x + 4) = 0

4x - 8 = 0

4x = 8

x = 2