gokdfish
gokdfish
17-03-2018
Mathematics
contestada
can someone please help me with Q1
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backseatdog
backseatdog
17-03-2018
Solve by completing the square:
x²+8x-7
= x²+8x+16-16-7
= (x+4)²-16-7
=(x+4)²-23
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