Question

(3x+5)(3x-5)-(3x-1)^2=10

Answer 1

$(3x+5)(3x-5)-(3x-1)^2=10$

$left( 3 x+5 right) left( 3 x-5 right) - left( 9 x^2-6 x+1 right) =10$

$9 x^2-15 x+15 x-25-9 x^2+6 x-1 = 10$

$6 x = 36 \ x = 6$