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Harman [31]
3 years ago
12

2b^2+4b–2=0 what is the answer?

Mathematics
1 answer:
s2008m [1.1K]3 years ago
5 0
2b^2+4b-2=0\\
2(b^2+2b-1)=0\\
2(b^2+2b+1-2)=0\\
2((b+1)^2-2)=0\\
2(b+1)^2-4=0\\\
2(b+1)^2=4\\\
(b+1)^2=2\\
b+1=-\sqrt2 \vee b+1=\sqrt2\\
b=-1-\sqrt2 \vee b=-1+\sqrt2


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