Question

The expression to be added to
$(5x2 - 7x + 2)$

Answer 1

$5 {x}^{2} - 7x - 2 \\ 5 {x}^{2} - 5x - 2x + 2 \\ 5 x -(x - 1) - 2(x - 1) \\( 5x - 2)(x - 1) \\ x =1 \\ x = \frac{2}{5}$
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