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Question

Solve x2+4x+3+2x+5=0

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Solution

|x2+4x+3|+2x+5=0
|(x+3)(x+1)|+2x+5=0++13
for
x(1,3)
(x2+4x+3)+2x+5=0
x2+4x+32x5=0
x2+2x2=0
x=2±4+82
for
x(, 3)[1,]
x2+4x+3+2x+5=0
x2+6x+8=0
(x+4)(x+2)=0
x=4, x=2
do not Lie
(=, 3)[1, ]
So,
x=(4) or (13)

1361951_1185305_ans_a53282a7d03c4911b17b8b9988cc7e7b.png

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