Question 129501
12^2+X^2=(2X-3)^2
144+X^2=4X^2-12X+9
X^2-4X^2+12X+144-9=0
-3X^2+12X+135=0
-3(X^2-4X-45)=0
-3(X-9)(X+5)=0
X-9=0
X=9 ANSWER FOR THE SHORTEST SIDE..
2*9-3=18-3=15 IS THE LONGEST SIDE.
12=THE THIRD SIDE.
PROOF:
12^2+9^2=15^2
144+81=225
225=225