Question

1.Efectuati.a)(x+y)2 d)(b-2)2. b)(a-3)2 e)(3-x)2 c)(x+a)2. f)(4+a)2

Answer 1

daca nu gesesc e asa
${x}^{2} + 2xy + {y}^{2} \\ {b}^{2} - 4b + {4} \\ {a}^{2} - 6a + 9 \\ 9 - 6x + {x}^{2} \\ {x}^{2} + 2ax + {x}^{2} \\ 16 +4 a + {a}^{2}$