Question

find the roots of quadratic equation x.2+4x+3=0by completing square method​

Answer 1

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

16x2/4x2

=4

add and subtract 4

x²+4x+4-4+3=0

(x²+4x+4)-4+3=0

(x+2)²-1=0

(x+2)²=1

sq root both sides

x+2=1

x=1-2

x=-1

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