Question

Determine: A) (2x-1) · (x+1)= b) (10y+2) · (4x-3)=​

Answer 1

a)

$2x + x + 2x - x - 1 \\ 2x {}^{2} + 2x - x - 1 \\ 2x {}^{2} + x - 1$

b)

$10y \times 4x - 10y \times 3 + 2 \times 4x - 2 \times 3 \\ 40xy - 30y + 8x - 6$