Math, asked by anniesmith, 28 days ago

maths anyone please tell .

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Answers

Answered by harisingh51

3

Answer:

question 1 is

13z -10z-7z^3

2) 0

Answered by nuzhath25

1

Answer:

1st answer

-z²+13z²-5z+7z³-15z

7z³+(-z²+13z²)+(-15z-5z)

7z³+(+12z²)+(-20z)

7z³+12z²-20z

Step-by-step explanation:

2nd answer

(a+b)-(a-b)

a+b-a+b

a-a+b+b

0+2b

2b

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