Answer:
r= -9 r=2
Step-by-step explanation:
r²+7r=18
r²+7r-18=0
(r+9)(r-2)=0
r+9=0 | r-2=0
r=-9 r=2
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Answer:
r= -9 r=2
Step-by-step explanation:
r²+7r=18
r²+7r-18=0
(r+9)(r-2)=0
r+9=0 | r-2=0
r=-9 r=2