How many real solutions does the equation 0.2x^5-2x^3+1.8x+k=0 have when k=1?
1 answer:
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Answer:
for (−4/5)x + 3/10 < 8/10: solution is x > -5/8
for −4/(5x) + 3/10 < 8/10: solution is x > -8/5
Step-by-step explanation:
I'm not exactly sure if you mean -4 divided by 5x or (-4/5)x, so I've done both! :)
subtract 3/10 from both sides:
Divide both sides by 4/5:
Divide both sides by -1 (reverse sign):
subtract 3/10 from both sides:
Multiply both sides by 5x:
Divide both sides by 5/2: