Factorise:(y^2-3y)^2-5(y^2-3y)-50
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Answered by
36
Answer:
(y2-3y+5)(y2-3y+10)
Step-by-step explanation:
let y2-3y be x, then,
x2-5x-50
=x2-10x+5x-50
=x(x-10)+5(x-10)
=(x+5)(x-10)
now out the value:y2-3y= x
(y2-3y+5)(y2-3y+10)
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11
Answer:
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