(2x7 + 7x4 + 6) - (2x4 - x)= _____A.4x11 + 6x3 +6B.2x7 + 9x4 - x + 6C.2x7 + 5x4 + x + 6D.6x3 + 6
Question
(2x7 + 7x4 + 6) - (2x4 - x)= _____A.4x11 + 6x3 +6B.2x7 + 9x4 - x + 6C.2x7 + 5x4 + x + 6D.6x3 + 6
Solution
To subtract the second expression from the first, we subtract each term in the second expression from the corresponding term in the first expression.
The first expression is 2x^7 + 7x^4 + 6. The second expression is 2x^4 - x.
Subtracting the second expression from the first gives:
(2x^7 + 7x^4 + 6) - (2x^4 - x) = 2x^7 + (7x^4 - 2x^4) + (6 + x) = 2x^7 + 5x^4 + x + 6
So, the correct answer is C. 2x^7 + 5x^4 + x + 6.
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