Solve question 1 immediately please

Solve question 1 immediately please SOLVED PROBLEMS

Dear student,

We have,6-x-2x2=-2x2-x+6=-2x2+x2-3          ...[taking -2 common]=-2x2+x2+142-142-3        ...[adding and subtracting 142]=-2x+142-116-3=-2x+142-1-3×1616=-2x+142+-1-4816=-2x+142+-4916=-2x+142-4916=-2x+142-742using a2-b2=a+ba-b=-2x+14+74×x+14-74=-2x+84×x+1-44=-2×x+2×x-34thus, -2×x+2×x-34 is the required answer 

Regards

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alzebrick 
 
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tricky one
 
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