Question

Решите
(5х-3)^2=(4х+3)(4х-3)+9х^2+3
(3х-2)^2=(2х+1)(2х-1)+5х^2-7

Answer 1

1. (5х-3)²=(4х+3)(4х-3)+9х²+3
25x²-30x+9=16x²-9+9x²+3
-30x=-15
x=0,5

2. (3x-2)²=(2x+1)(2x-1)+5x²-7
9x²-12x+4=4x²-1+5x²-7
-12x=-12
x=1