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Express x^2 +4x-7 in the form (x+a)^2 -b where a and b are integers

Express x^2 +4x-7 in the form (x+a)^2 -b where a and b are integers-example-1

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x^2+4x-7=x^2+4x+4-11=(x+2)^2-11

User Vadim Nikolaev
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