3x^2+10=2x^+8x
x²-8x+10=0
(x²-8x+16)-6=0
(x-4)²-6=0
(x-4+√6)(x-4-√6)=0
x=4-√6,x=4+√6
36x^2-1=0
(6x+1)(6x-1)=0
x=-1/6,x=1/6
4x^2=81
4x²-81=0
(2x+9)(2x-9)=0
x=9/2,x=9/2