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18-05-2021
Mathematics

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Solve 7z^2 + 4z - 1) + (2z^2 - 6z + 2)

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19-05-2021

Answer:

9z^2+4x+1

Step-by-step explanation:

Remove parentheses.

7{x}^{2}+4x-1+2{x}^{2}+2

7x

2

+4x−1+2x

2

+2

2 Collect like terms.

(7{x}^{2}+2{x}^{2})+4x+(-1+2)

(7x

2

+2x

2

)+4x+(−1+2)

3 Simplify.

9{x}^{2}+4x+1

9x

2

+4x+1

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