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Express 2x^2 +8x +7 in the form A(x+B)^2 + C, where A, B and C are constants
2x
2
+8x+7=2(x
2
+4)+7=2((x+2)
2
-4)+7=2(x+2)
2
-8+7=2(x+2)
2
-1
A=2, B=2, C=-1
MC
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Matilda C.
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