WAEC - Mathematics (2017 - No. 10)

One factor of \(7x^2 + 33x - 10\) is
7x + 5
x - 2
7x - 2
x - 5

Explanation

\(7x^2 + 33x - 10\)

\(7x^2 + 35x - 2x - 10\)

7x (x + 5) - 2 (x + 5)

(7x - 2) (x + 5)

 

 

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