SOLUTION: If f(x) = x^2, find f(8-square root 5) =(8-sq. root 5)(8- sq. root 5) =8^2-8(sq. root 5)-8(sq. root 5)+(sq. root 5)^2 =64-16 sq. root 5+5 =64+5-

Algebra ->  Radicals -> SOLUTION: If f(x) = x^2, find f(8-square root 5) =(8-sq. root 5)(8- sq. root 5) =8^2-8(sq. root 5)-8(sq. root 5)+(sq. root 5)^2 =64-16 sq. root 5+5 =64+5-      Log On


   

Question 136420: If f(x) = x^2, find f(8-square root 5)
=(8-sq. root 5)(8- sq. root 5)
=8^2-8(sq. root 5)-8(sq. root 5)+(sq. root 5)^2
=64-16 sq. root 5+5
=64+5-16 sq. root 5
=69-16 square root 5
Answer by tns_tutor5000(9) About Me  (Show Source):