Question

$(2x+9)(4x-1)-8x^{2} =59$ решите

Answer 1

$(2x+9)(4x-1)-8x^2 =59\\8x^2-2x+36x-9-8x^2 =59\\8x^2-2x+36x-8x^2 =59+9\\34x=68\ /:34\\x=2$

Answer 2

$(2x + 9)(4x - 1) - 8 {x}^{2} = 59 \\ \\ 8 {x}^{2} - 2x + 36x - 9 - 8 {x}^{2} = 59 \\ \\ 34x - 9 = 59 \\ \\ 34x = 59 + 9 \\ \\ 34x = 68 \\ \\ x = 2$