Factorise:
84 - 2r - 2r×r
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Answer:
(2r - 14)(r + 6)
Step-by-step explanation:
84 - 2r - 2r^2
= 2r^2 -2r - 84
= 2r^2 + 12r - 14r - 84
= 2r(r + 6) - 14(r + 6)
= (2r - 14)(r + 6) ANS
Hope I helped
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