a a a a a a a aa aaa a a aaaa
Answer: it's 5x and - 4x
equation is 4 x² + x -5
the factors of -20 = - 4 × 5
4 x² + 5x - 4x -5
x ( 4 x +5) -1 ( 4x +5)
(x -1) (4 x +5
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