This question is about functions f(x) = x^2 - 13x - 30 and g(x) = -3x^3 + 7x. Calculate f(x) times g(x). Simplify the answer as much as possible.
now apply the distributive property for each of the three terms
and then combine like terms
a little long there myininaya
\[\large (f(x))(g(x))\] \[\large (x^2 - 13x - 30)(-3x^3 + 7x)\] \[\large (-3x^3 + 7x)(x^2 - 13x - 30)\] \[\large -3x^3(x^2 - 13x - 30)+7x(x^2 - 13x - 30)\] \[\large -3x^5 +39x^4+ 90x^3+7x^3 -91x^2 -210x\] \[\large -3x^5 +39x^4+ 97x^3 -91x^2 -210x\] So \[\large (x^2 - 13x - 30)(-3x^3 + 7x)=-3x^5 +39x^4+ 97x^3 -91x^2 -210x\]
is it cut off? it doesn't show me any cutoffness
maybe it is my browser. i see as far as -13x
ok well just look at what jim has anything he ever does is perfect
I find it better to expand (A+B+C)(D+E) to D(A+B+C)+E(A+B+C) instead of A(D+E)+B(D+E)+C(D+E) since it's shorter but you'll get the same answer either way
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