SOLUTION: please multiply and simplify (4a-5)(2a^2+a-4) thanks

Question 194045: please multiply and simplify

(4a-5)(2a^2+a-4)

thanks
Found 2 solutions by RAY100, Alan3354:
Answer by RAY100(1637) (Show Source): You can put this solution on YOUR website!
( 4a -5 ) (4a^2 +a -4 )
,
,,,,,,,16a^3 + 4a^2 - 16a
,,,,,,,,,,,,,,,,,- 20 a^2 - 5a + 20
_________________________________
,,,,,,,,16a^3 - 16a^2 -21a +20
,
check
let x=1 in both original and answer, both gave (-1),,,ok
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
please multiply and simplify
(4a-5)(2a^2+a-4)
= 4a*(2a^2+a-4) - 5*(2a^2+a-4)
=
=

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