bmcmillan444osbrxm bmcmillan444osbrxm
  • 03-07-2018
  • Mathematics
contestada

(6a³-3b³)(4a²+5b²) help me please

Respuesta :

nrjunn nrjunn
  • 03-07-2018
send the question sentences.
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midknight9
midknight9 midknight9
  • 04-07-2018
So what we're going to do here is FOIL (first, inner, outer, last):

[tex](6 a^{3}*4 a^{2})+ (6 a^{3}*5 b^{2})+(-3 b^{3}* 4 a^{2})+(-3 b^{3}*5 b^{2})[/tex]

When we multiply exponents, and they have the same base (for example both have a or both have b), we add them. Let's simplify this expression:

[tex]24 a^{5} +30 a^{3} b^{2}+(-12 b^{3} a^{2})+(-15 b^{5}) [/tex]

Which can be further simplified to:

[tex]24 a^{5} +30 a^{3} b^{2}-12 b^{3} a^{2}-15 b^{5} [/tex]
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