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Mathematics 11 Online
OpenStudy (anonymous):

Find the product. (a - 8)(a + 2)

OpenStudy (anonymous):

A. 2a - 6 B. a2 - 16 C. a2 - 10a + 16 D. a2 - 6a - 16

OpenStudy (anonymous):

i got B

OpenStudy (anonymous):

@jim_thompson5910

OpenStudy (anonymous):

@Mertsj

OpenStudy (anonymous):

no i will now

jimthompson5910 (jim_thompson5910):

an alternative is to do this (a - 8)(a + 2) a(a + 2) - 8(a + 2) then distribute and combine like terms

jimthompson5910 (jim_thompson5910):

FOIL is great, but it's limited to just multiplying 2 binomials when you want to multiply any 2 polynomials, FOIL isn't going to work

OpenStudy (anonymous):

a^2-10a+16

jimthompson5910 (jim_thompson5910):

a(a + 2) - 8(a + 2) a^2 + 2a - 8a - 16 ???

jimthompson5910 (jim_thompson5910):

+2 - 8 is NOT -10

OpenStudy (anonymous):

a^2-6a-16

jimthompson5910 (jim_thompson5910):

perfect

OpenStudy (anonymous):

ty

jimthompson5910 (jim_thompson5910):

yw

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