Question

factorise this : y² – 21y +90 by middle term splitting​

Answer 1

Answer:

${y}^{2} - 21y + 90$

$= {y}^{2} - 15y - 6y + 90$

$= y(y - 15) - 6(y - 15)$

$= (y - 15)(y - 6)$

Answer 2

I hope I am correct ☝☝

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