please help me with this. an explanation would be great as well

Answer:
A
Step-by-step explanation:
test the constant 1/2 + (1/2)*(-3) = -2/2 = -1
Answer:
A
Step-by-step explanation:
y + yz
= x + [tex]\frac{1}{2}[/tex] + (x + [tex]\frac{1}{2}[/tex] )(2x - 3) ← expand factors using FOIL
= x + [tex]\frac{1}{2}[/tex] + 2x² - 3x + x - [tex]\frac{3}{2}[/tex] ← collect like terms
= 2x² - x - 1 → A