Question

me ajudem por favor !​

Answer 1

2

$(a - b) \times (a - b)$

${a}^{2} - ab - ab + {b}^{2}$

${a}^{2} - 2ab + {b}^{2}$

3

a

$(x - 3) \times (x - 3)$

${x}^{2} - 3x - 3x + 9$

${x}^{2} - 6x + 9$

b

$(a - 4) \times (a - 4)$

${a}^{2} - 4a - 4a + 16$

${a}^{2} - 8a + 16$

c

$(5 - y) \times (5 - y)$

$25 - 5y - 5y + {y}^{2}$

${y}^{2} - 10y + 25$

d

$(m - 6) \times (m - 6)$

${m}^{2} - 6m - 6m + 36$

${m}^{2} - 12m + 36$