What is the difference of the rational expressions below?
7xx+4-3x
7x-3x2+4
7x-34
7x2-3x+12x2+4x
7x2-3x-12x2+4x
Explanation for the correct option:
We have 7xx+4-3x
Taking LCM of the two ratios and subtracting we have,
7xx+4-3x=(7x)×x-3(x+4)(x+4)×x=7x2-3x-12x2+4x
Hence, the correct answer is option (D).
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