Find the number of terms in the simplified form of (2x + 7)(7x - 2).

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Solution

The correct option is C 3
$(2 x + 7) (7 x - 2) = 2 x (7 x - 2) + 7 (7 x - 2) = 14 x^{2} - 4 x + 49 x - 14 = 14 x^{2} + 45 x - 14$

Number of terms in $14 x^{2} + 45 x - 14$ is 3.

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