Question

$y {}^{2} - 17y + 72 = 0$
factorisation method
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Answer 1

Answer:

Answer

I. x

2

−7x+6x−42=0

= (x−7)(x+6)=0

= x=7 or x=−6

lI. y

2

−8y−9y+72=0

= (y−8)(y−9)=0

=y=8 or y=9

= x<y