Question

factorise: y^2-16y-80​

Answer 1

Answer:

${y}^{2} - 16y - 80$

$= {y}^{2} - 20y + 4y - 80$

$= y(y - 20) + 4(y - 20)$

$= (y - 20)(y + 4)$

Step-by-step explanation:

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