SOLUTION: 1. Use a graphing device to solve the inequality, as in example 5. Express your answer using interval notation, with the endpoint of the intervals rounded to two decimals. X^5 +

Question 1039284: 1. Use a graphing device to solve the inequality, as in example 5. Express your answer using interval notation, with the endpoint of the intervals rounded to two decimals.
X^5 + x^3 _> x^2 + 5x
The answer is NOT [-1.23, 0] and [1.44, inf]
2. 9x^2 -18x + 1 in vertex form.

Found 2 solutions by Boreal, solver91311:
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
9(x^2-2x)+1, rewritten.
9(x^2-2x+1)-9+1, completing the square, then subtracting the constant (multiplying by 9).

9(x-1)^2-8
vertex should be at (1,-8)

Check also by -b/2a for x, which is -(-18/18)=1
f(1)=-8
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

You are right, the answer is not

.

That is because is NEVER included as an endpoint of an interval. If you include an endpoint in an interval, that endpoint must be a number, but is not a number. The correct answer to the problem is:

[-1.23,0][1.44,).

John

My calculator said it, I believe it, that settles it

RELATED QUESTIONS
Solve the inequality. Express your answer using set notation and interval notation.... (answered by ikleyn,math_tutor2020)
-8x-12< or equal to -2(3x+5) solve the inequality express your answer in interval... (answered by jim_thompson5910)
Solve the inequality. Express the final answer in interval notation. |x-1|+2<5 (answered by tommyt3rd)
Hi. May I have some help with this inequality? Solve the inequality. Express the... (answered by josmiceli)
Solve the rational inequality (x-2)/(x+3) ≥ 0. Express your answer using interval (answered by josgarithmetic)
Please help me with the following: Solve the rational inequality. Express your answer... (answered by josgarithmetic,MathTherapy)
solve each of the following inequality. express your final answer using interval... (answered by stanbon)
Solve the inequality. Express your answer using interval notation and set notation.... (answered by lwsshak3)
Part 1. Rewrite the inequality as an equivalent pair of inequalities without absolute... (answered by Boreal)