(iii) x2 - 3x + 4
+4x² – 2x+7
-X2 + 5x - 2
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all the words is like a stage you have to learn the rules of the game and then you have to play better than anyone else this this line we are taught by Albert Einstein
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= x2 - 3x + 4 + 4x2 - 2x + 7 - x2 + 5x - 2
= x2 - x2 - 3x - 2x + 5x + 4 + 7 - 2 +4x2
= 9 + 4x2 answer.
Hope it helps
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