Question 118257
4throot(x-5)^8=4throot[(x-5)^4(x-5)^4]=(x-5)(x-5)=x^2-10x+25 answer.
proof:
letx=7:
4throot(7-5)^8=4throot(2)^8=4throot256=4 answer.
7^2-10*7+25=49-70+25=74-70=4 answer.