I am new to this forum. And hoping to get some answers on some mathematical equations. Here is my first one -
$$(x - 5) (a + x) = x^2 - 25$$
What is the value of $a$ in this equation?
EDIT: This question is actually a multiple choice question from our BCS exam in the early 90's. And it actually had 4 options to answer as followed:
I also believe that the expression has a mistake and I actually cannot figure out the real problem. That's why I posted here, if anyone can figure that out. Hope this helps to all of you.
Please help me out. TIA.
Second edit: I have fixed the expression with correct equation value (replacing a with x). And also I have solved the math. Thanks for the all the suggestions.