Question

Помогите решить:
(b-3)²=
(2+x)²=
(4-b)²=
(2x+3)²=
(7y-6)²=
(15-x)²=

Answer 1

Ответ:

${(b - 3)}^{2} = {b}^{2} - 6b + 9$

${(2 + x)}^{2} = 4 + 4x + {x}^{2}$

${(4 - b)}^{2} = 16 - 8b + {b}^{2}$

${(2x + 3)}^{2} = 4 {x}^{2} + 12 + 9$

${(7y - 6)}^{2} = 49 {y}^{2} - 84 + 36$

${(15 - x)}^{2} = 225 - 30x + {x}^{2}$