Question

Раздаю баллы а ответы))))

Answer 1

$(9t-8)^2=81t^2-2*8*9+64=81t^2-144+64$

Answer 2

$\boxed{{(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2}}$

$81 {t}^{2} - 144t + 64 = {(9t)}^{2} - 2 \times 9t \times 8 + {8}^{2} = {(9t - 8)}^{2} = \mathit {(9t - 8) \times (9t -8)}$

Ответ: (9t-8)•(9t-8)