UPSKILL MATH PLUS

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Answer variants:
(y−20)(y+4)
(a+30)(a−20)
(t+9)(t+8)
(t−9)(t−8)
(a−30)(a+20)
(y+20)(y−4)
Factorise the following by splitting the middle term.
 
S.NoExpressionFactors
(i)\(t^2 + 72 - 17t\)
(ii)\(y^2 - 16y - 80\)
(iii)\(a^2 + 10a - 600\)