Question

помогите пожалуйста ​

Answer 1

$64m {}^{2} - 2.89n {}^{2} = (8m - 1.7n) \times (8m + 1.7n)$

$1.7 \times 1.7 = 2.89$

$0.09x {}^{8} - 1.96y {}^{2} = (0.3x {}^{4} - 1.4x {}^{} ) \times (0.3x {}^{4} + 1.4y)$

$1.4 \times 1.4 = 1.96$