Math, asked by rajhindustani53, 4 months ago

Simplify combining like terms:
(1) 21b-32 + 7b-205
(ii) - z2 + 13z2 - 5z + 7z3 - 15z

Answers

Answered by dhavaneanushree9

3

Step-by-step explanation:

21b -32+7b-205

21b+7b-32-205

34b - 237

Answered by tapaswinibarik597

5

Step-by-step explanation:

1ans ) 21b-32+7b-205

=21b+7b-32-205

=28b-173

2ans) -z²+13z²-5z+7z³-15z

=-z²+13²-5z-15z+7z3

12z²-20z+7z³

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