Solve the system of equations
4x2 - 8x + 1
3x2 - 7x - 6
Multiply the 2nd line by -1
4x2 - 8x + 1
-3x2 + 7x + 6
Add the lines together
x2 -x + 7
Answer: a)
We have 125 = 5³ and 1/5 = 0.2. Then
1/125 = (1/5)³ = 0.2³ = 0.008
so that
4 27/125 = 4 + 27 • 0.008
… = 4 + 0.216
… = 4.216
This is your answer ok x=2.5
Answer:
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