Question

(-2,5x-1)(4-x)
(3c-c)(c+5c-1)​

Answer 1

(-2,5x-1)(4-x)=(-10x)+2,5x^2-4+x=-9x+2,5x^2-4

(3c-c)(c+5c-1)

3c^2+15c^2-3c-c^2-5c^2+c

12c^2-2c