We want to write the given function in the form ax^2 + bx + c = 0.
We foil the left side.
(2x - 1)(x + 5) =0
2x^2 + 10x - x - 5 = 0
2x^2 + 9x - 5 = 0
Can you see the value of "b"?
The b-value is the coefficient of x.
So, b = 9.
Done!
The final answer should be
2x^3 - 2x^2 + 4x + 5
hope this helps!
Sorry what is the whole question?
0.85 is equal to 6/7 because you divide six by seven....Hope this helped.
Hope this helps! feel free to clarify
