prove that for any natural value of n the value of the expression (n+2)^2-(n-2)^2 is a multiple of 8.

Se below

Step-by-step explanation:

Simplifying, using formula a^2 - b^2 = (a +b)(a - b)

As  we see the resulting expression is multiple of 8

answer: i'm not going to give you the answer, but some hints to work it out.

step-by-step explanation: so, if there is a straight line that means that the line angle is 180°. so we subtract the 2 angle measures provided, (15 and 38) from 180. so the answer is 180 - (38 + 15). (you have to solve the equation)