jabarkanlah a.(4z-3) (2z+7) b.(5y-2) (2y-5)

a) (4z-3) (2z+7)
= 8z²+22z-21
b) (5y-2) (2y-5)
= 10y²-29y+10
maaf kalo salah

a 8z^2+ 28z -6z -21
= 8z^2+ 22z -21
b 10y^2-25y-4y+10
= 10y^2 - 29y + 10