If |x| + 3 =9, then x =?
1 answer:
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X^2 + 6x + 3 = 0
a=1, b=6, c=3
x1=[-6+sqrt (6^2-4*1*3)] / (2*1)
=[-6+sqrt (24)] / (2)
=-0.55
x2==[-6-sqrt (6^2-4*1*3)] / (2*1)
=[-6-sqrt (24)] / (2)
=-5.45
answer A
a=1, b=6, c=3
x1=[-6+sqrt (6^2-4*1*3)] / (2*1)
=[-6+sqrt (24)] / (2)
=-0.55
x2==[-6-sqrt (6^2-4*1*3)] / (2*1)
=[-6-sqrt (24)] / (2)
=-5.45
answer A