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b)(2a+5)-4(6a-5)=2a+5-24a+20
=2a-24a+5+20=-22a+25
c)(8y-2)(-4y+7)=-32y²+56y+8y-14
= -32y²+64y-14
d)-2(3q-5)+2(q+4)=-6q+10+2q+8
=-6q+2q+10+8=-4q+18