Question

написать букву і розв'язати​

Answer 1

Объяснение:

(m-3)(m+3)(m²+9)+(m+1)(2m²-3)-(3-m²)²=

=(m²-9)(m²+9)+(2m³-3m+2m²-3)-(9-6m²+m⁴)=

=m⁴-81+(2m³-3m+2m²-3)-9+6m²-m⁴=

=m⁴-81+2m³-3m+2m²-3-9+6m²-m⁴=

=2m³+8m²-3m-93

m= -3

2×(-3)³+8×(-3)²-3×(-3)-93=

=2×(-27)+8×9+9-93= -54+72+9-93= -66