Question

(a+5)(a-3) find the product

Answer 1

FOIL method (first, outside, inside, last)

(a + 5)(a - 3)

F -- multiply first terms in each set
a * a = a^2
O -- multiply outside terms in each set
a * -3 = -3a
I --- multiply inside terms in each set
5 * a = 5a
L --- multiply last terms in each set
5 * -3 = -15
now we have :
a^2 - 3a + 5a - 15 -- combine like terms
a^2 + 2a - 15

any questions ?

Answer 2

yes....

Answer 3

I can try