Step-by-step explanation:
As Isosceles triangel has for sure 2 equal angles
and the sum of angles in any triangle is 180
so you have only thes 2 conditions either :
2(x^2+4)+22x+12=180 or 2(22x+12)+(x^2+4)=180
2x^2+8 +22x+12-180=0 or 44x+24+x^2 +4 - 180=0
2x^2+22x-160=0. or x^2+44x-152=0
x1=5 x2=-16. or x3=3.22 x4=-47.22
