*(a + 3)² = *(x + 4)²= *(y + 7)²= *(5+z)²= *(b + 8)²= *(2x + 3)²= *(3y + 4)²= *(6+2b)²= *(8 + 4a)²= *(2x + 3y)² = *(3x + 4y)²= *(2a + 5b)²= *(√5+√3)²= 2 *(√15+√2) ² 2 *(√7+√8) ²: *(a + 1)² 2​