Question

Write the coefficient of x2 in each of the following.
i) (3x-1)(5-2x)
ii) 7-6x

Answer 1

Answer:

Step-by-step explanation:

1) (3x - 1 ) ( 5 - 2x )

= 3x ( 5 - 2x ) - 1 ( 5 - 2x )

= 15x - 6x² - 5 + 2x

= - 6x² + 17x - 5

∴ The coefficient of x² is - 6.

2) The coefficient of x² is 0.