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Mathematics 19 Online
OpenStudy (anonymous):

Find the product (x-2)(x^2+8x-6)

jimthompson5910 (jim_thompson5910):

Hint: (x-2)(x^2+8x-6) expands out to x(x^2+8x-6) - 2(x^2+8x-6)

OpenStudy (anonymous):

i get confused when multipling the x's. do they become x^3

jimthompson5910 (jim_thompson5910):

x times x^2 is x^3, and that's the only x^3 term

jimthompson5910 (jim_thompson5910):

another term is x times 8x = 8x^2

OpenStudy (anonymous):

x^3+8x^2-6x-2x^2-16x+12 ?

jimthompson5910 (jim_thompson5910):

good, now combine like terms

OpenStudy (anonymous):

x^3+6x^2-22x+12

jimthompson5910 (jim_thompson5910):

you nailed it

OpenStudy (anonymous):

wow, thank u soo much

jimthompson5910 (jim_thompson5910):

yw

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