tnt82799
tnt82799
06-04-2018
Mathematics
contestada
algebra help. Is the answer to #7, D?
Respuesta :
AnimeBrainly
AnimeBrainly
06-04-2018
(5x - 3)² = (5x - 3)(5x -3)
Use the FOIL method: (
F
irst,
O
utside,
I
nside,
L
ast)
5x(5x) = 25x²
5x(-3) = -15x
-3(5x) = -15x
-3(-3) = 9
25x² - 15x - 15x + 9
combine like terms
25x² - 30x + 9
25x² - 30x + 9
is your answer
hope this helps
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