Question

Решите уравнение _____

Answer 1

$(5x+3)^{2} - (1-5x)^{2} =2 \ 25 x^{2} +30x+9-1+10x-25 x^{2} =2 \ 40x+8=2 \ 40x=2-8 \ 40x=-6 \ x=- frac{6}{40} \ x=- frac{3}{20}$