Answer:
r=-10, r=-4
Step-by-step explanation:
r^2+17r+40-3r=0
r^2+14+40=0
r^2+10r+4r+40=0
(r+10)(r+4)=0
r+10=0, r+4=0
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Answer:
r=-10, r=-4
Step-by-step explanation:
r^2+17r+40-3r=0
r^2+14+40=0
r^2+10r+4r+40=0
(r+10)(r+4)=0
r+10=0, r+4=0