Question

Решите уравнение
$(2x + 3)(4x - 3) - 17 = 2x(4x + 1)$
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Answer 1

$(2x+3)(4x-3)-17=2x(4x+1)\\8x^2-6x+12x-9-17=8x^2+2x\\12x-6x-2x=9+17\\4x=26\\x=\frac{26}{4}=6,5$

Ответ: 6,5

Answer 2

Ответ:

$(2x + 3)(4x - 3) - 17 = 2x(4x + 1) \\ 8x {}^{2} - 6x + 12x - 9 - 17 = 8x {}^{2} + 2x \\ 6x - 26 = 2x \\ 6x - 2x = 26 \\ 4x = 26 \\ x = 6.5$