Question 916236
find the products. 

(4y-3)(5y+3)
= 4y*(5y+3) - 3*(5y+3)
= 20y^2+12y -15y-9
= 20y^2 - 3y - 9
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Do the others the same way.
(a+8)(b+3)

(j+7)(k-5)