b2( 1.7b2-1.4b+0.5)
Объяснение:
2b4-0.8b3-0.4b2-0.3b4-0.6b3+0.9b2=
=1.7b4-1.4b3+0.5b2=b2( 1.7b2-1.4b+0.5)
b2( 1.7b2-1.4b+0.5)
Объяснение:
2b4-0.8b3-0.4b2-0.3b4-0.6b3+0.9b2=
=1.7b4-1.4b3+0.5b2=b2( 1.7b2-1.4b+0.5)