X = -15 because first u move the ax’s to one side so it would be 3x-5x=25+5 then u calculate each side 3x-5x= -2x and 25+5=30 so -2x=30 and then u divide both sides by -2 and -2/-2 cancels out and 30/-2 equals -15 (I hope his helps) :))
Im pretty sure that it is 50
<span>(2^3)^5
=2^(3*5)
= 2^15
hope it helps</span>