Question

Решите уравнение :
(4x+3)^2 - (3x-1)^2 = 0

Answer 1

(4x+3)² - (3x-1)² = 0

16х²+24х+9 - (9х²-6х+1) =0

16х²+24х+9 - 9х²+6х-1 =0

7х²+30x+8=0

D=900 - 224= 676

x₁ = (-30+26)/14= -2/7

x₂=(-30 -26)/14 =- 4