(2b-3)(3-2b)-4b(b-2)+9

Question

(2b-3)(3-2b)-4b(b-2)+9

Comments

ой, (3+2b)

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6b +4 b( 4b-в квадрате) -9-6b- 4b( 4b-в квадрате)+ 8b+9=8

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спасибо

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=8b..)

Answer 1

= 6b+4b²-9-6b-4b²+8b+9 = 8b