а) (2,6x – 3) (2,6х + 3) — (2,4х – 5) (2,4х + 5) = 2x (0,5х + 4)
6,76х²-9-5,76x²+25=x²+8x
x²-x²+16=8x
x=2
6) (3,7x - 2) (3,7x + 2) - (1,3x - 1) (1,3x + 1) = 6x (2x - 1)
13,69x²-4-1,69x²+1=12x²-6x
12x²-12x²-3=-6x
x=
x=0,5
а) (2,6x – 3) (2,6х + 3) — (2,4х – 5) (2,4х + 5) = 2x (0,5х + 4)
6,76х²-9-5,76x²+25=x²+8x
x²-x²+16=8x
x=2
6) (3,7x - 2) (3,7x + 2) - (1,3x - 1) (1,3x + 1) = 6x (2x - 1)
13,69x²-4-1,69x²+1=12x²-6x
12x²-12x²-3=-6x
x=
x=0,5