I cant see the link ummmmmm
No BECAUSE I DONT KNOW WHO THAT IS LOL
Answer:
the answer is x=185
Step-by-step explanation:
x+240=425
-240 -240
x= 185
The square of a binomial expands as follows:

Expanding all the binomials, we have

Sum like terms:

Simplify terms appearing on both sides:

Move all terms involving k to the left and all numbers to the right:

Divide both sides by -20:
