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Mumz [18]
3 years ago
8

Simplify (3x^2-x+7)+(6x^2-3)

Mathematics
2 answers:
ioda3 years ago
7 0

[ Answer ]

\boxed{9x^{2} \ - \ x \ + \ 4}

[ Explanation ]

Simplify: (3x^{2} - x + 7) + (6x^{2} - 3)

Remove Parenthesis

3x^{2} - x + 7 + 6x^{2} - 3

Group Like Terms

3x^{2} + 6x^{2} - x + 7 - 3

Add Similar Elements: 3x^{2} + 6x^{2} = 9x^{2}

9x^{2} - x + 7 - 3

Add \ Subtract Numbers: 7 - 3 = 4

9x^{2} - x + 4

\boxed{[ \ Eclipsed \ ]}

Ronch [10]3 years ago
4 0

Simplify

3x^2 - x + 7 + 6x^2 - 3

Collect like terms

(3x^2 + 6x^2) - x + (7 - 3)

Simplify

<u>9x^2 - x + 4</u>

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3 years ago
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Step-by-step explanation:

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Given:

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Using Pythagoras theorem, the vertical height of one step is

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