saraann
saraann
28-09-2018
Mathematics
contestada
Factor
a ^2 - a - 20
Respuesta :
kudzordzifrancis
kudzordzifrancis
28-09-2018
The factors of -20 that sums to -1 are,
[tex] - 5, \: 4[/tex]
Hence,
[tex] {a}^{2} - a - 20 =(a-5)(a+4)[/tex]
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