Answer:
2x² + 9x - 5
Here the value of b = 9.
Explanation:
The standard form of a quadratic is
. To write the expression (2x - 1)(x + 5) in standard form, multiply the factors using the distributive property and combining like terms.
(2x - 1)(x + 5)
2x²- x + 10x - 5
2x² + 9x - 5
Here the value of b = 9.