Question

как решить (5х-3)^2-25(х-1)(х+1)=0

Answer 1

25х² - 30х +9 -25(х²-1) = 0
25x² -30x +9 -25x² +25 =0
-30x +34 = 0
-30x = -34
30x =34
x = 34/30
x = 17/15
x = 1   2/15