Question

39х+(4х+3)²=2+4(2х+1)² решите уравнение быстро

Answer 1

39х+(4х)²+2*4х*3+9=2+4((2х)²+2*2х*1+1²)
39х+16х²+24х+9=2+4(4х²+4х+1)
39х+16х²+24х+9=2+16х²+16х+4
39х+16х²+24х-16х²-16х=2+4-9
47х=-3
х=-3/47