Answer; s=-3
Step-by-step explanation:
2s²=18
2s²=18=0
2(s²-9)=0
s²-9=0
s=-b+√b²-4ac÷2a
a=1 b=0 c=-9
s=-0+√0²-4.1(-9)
s=0+6÷2
s=3
s=-3
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Answer; s=-3
Step-by-step explanation:
2s²=18
2s²=18=0
2(s²-9)=0
s²-9=0
s=-b+√b²-4ac÷2a
s²-9=0
a=1 b=0 c=-9
s=-0+√0²-4.1(-9)
s=0+6÷2
s=3
s=-3