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Answer:
x=-4
Step-by-step explanation:
(x+4) ^ (1/3) + (2x+8) ^ (1/3) = 0
Subtract (x+4) ^ (1/3) from each side
(x+4) ^ (1/3) - (x+4) ^ (1/3)+ (2x+8) ^ (1/3) = -(x+4) ^ (1/3)
(2x+8) ^ (1/3) = -(x+4) ^ (1/3)
Cube each side
(2x+8) ^ (1/3) ^3= -(x+4) ^ (1/3)^3
2x+8 = -(x+4)
Distribute the negative sign
2x+8 = -x -4
Add x to each side
2x+8 +x =-x+x-4
3x+8 = -4
Subtract 8 from each side
3x+8-8 =-4-8
3x =-12
Divide by 3
3x/3 = -12/3
x = -4
Answer:
Yes
General Formulas and Concepts:
<u>Algebra I</u>
- Reading a coordinate graph
- Coordinates (x, y)
- Solving inequalities
Step-by-step explanation:
When we plot (-2, -4) onto the graph, we can envision that the point is within the shaded region of the graphed line.
∴ (-2, -4) would be a solution.
She will know if 5(3x - 6) is equivalent to 15x - 30 if they end up to be equal to the same number.
5(3x - 6) Substitute 2 into x
5(3(2) - 6)
5(6 - 6) = 5(0) = 0
15x - 30
15(2) - 30
30 - 30 = 0
They both equal 0 when 2 is substituted in, so they are equivalent.
Also if you distributed 5 into (3x - 6) it would equal 15x - 30
