Question

(5х-3)(5х+3)-(4х-5)^2=4х-34

Answer 1

(5х-3)(5х+3)-(4х-5)*2=4х-34
(5х-3)(5х+3)-8х-10=4х-34
(5х-3)(5х+3)-8х-4х=-34+10
(5х-3)(5х+3)-12х=-24
5х*5х-3*3=-24
25х-9=-24
25х=-24+9
25х=-15
х=-15:25
х=-0,6