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fgiga [73]
3 years ago
5

Complete the square: x^2 + 2x - 3 = 0

Mathematics
2 answers:
Sophie [7]3 years ago
7 0
x^{2} +2x-3=0 \\\\ (x)^2+2(x)(1) +(1)^2 -1^2-3 =0 \\\\ (x+1)^2-4 = 0 \\\\ (x+1)^2 = 4 \\\\ x+1 = \± \sqrt{4}  \\\\ x = -1 ~\±2 \\\\ \therefore x = 1 ~~~or~~~ x = -3

Aloiza [94]3 years ago
3 0
I got x=plus or minus 1
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Step-by-step explanation:

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