Question

Find the error in each of the following and provide an explanation of the mistake made. Thanks for the help.


a) (3x/1/x-5)^1 =1/3x/x-1/5

b) (3x/1/x-5)^1 =-3x/5-1/x

c) (3x-4y)^2 = 9x^2 + 16y^2

d) x^2-3/4+x^2=-3/4

Answer 1

a and b. Anything to the first power ("^1") is that value, 100^1 = 100.

c. There is a middle (xy) term missing.

d. The x^2 values combine but do not cancel each other out.