luphAliaverangiejo luphAliaverangiejo

21-07-2016
Mathematics

Answered

Subtract and simplify: (3x2 - 6x + 7) - (x2 - 6x + 4)

2x power of 2 + 6x + 3

4x power of 2 6x + 3

2x power 2 + 6x + 11

2x power if 2 + 3

Verified Answer :

meerkat18 meerkat18

21-07-2016

Distribute the negative sign to the terms inside the parentheses. Such that,
3x² - 6x + 7 - x² + 6x - 4
Combining like terms,
(3x² - x²) + (-6x + 6x) + (7 - 4)
Simplifying,
2x² + 3
The answer is choice 4

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