factorise 2x^2-2x+84
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Answer:
2x²-2x+84
=2(x²-x-42) [taking 2 in the common]
Step-by-step explanation:
When factorising you find a common multiple of all the digits. In this case we have 2. x does not go into 84. We then use factorisation 2(x²−x−42).
Double checking our work
2(x²)=2x²
2(x)=2x
2(42)=84
Therefore the factors are 2 and x²-x-42.
Answered by
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Answer:
ans is -6, -7and+7
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