Answer:
B.35 is the correct answer
Step-by-step explanation:
. Hello!
As, we know Pythagorean theorem is
a²+b²=c²,
where a&b are two sides of the triangle and c is it's hypotenus.
so, assuming 12=a, x=b and x+2i=c
- (12)²+(x)²=(x+2)²...substitute values
- 144+x²=x²+4x+4...squaring it
- 144+x²-(x²+4x+4)=0...shift x²+4x+4 to the left
- 144+x²-x²-4x-4=0...equate the similar values
- 140-4x=0....move 140 to the right to solve for it
- -4x=-140....divide both sides by 4
- x=35.... finally we get 35.
If you have any questions ask me thx
