Solve. (Hint: Factor by grouping.) 4x 3 + 11x 2 - 144x - 396 = 0?

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Solve. (Hint: Factor by grouping.) 4x 3 + 11x 2 - 144x - 396 = 0?

x = (smallest value) x = x = (largest value)

2007-09-28 13:53:33 · 4 answers · asked by mir d 1 in Science & Mathematics ➔ Mathematics

4 answers

4 x ³ - 144 x + 11 x ² - 396 = 0
4 x ( x ² - 36 ) + 11 (x ² - 36 ) = 0
( x ² - 36 ) ( 4x + 11 ) = 0
(x - 6) (x + 6) (4x + 11) = 0
x = - 6 , x = - 11/4 , x = 6

2007-09-28 22:01:23 · answer #1 · answered by Como 7 · 0⤊ 0⤋

4xÂ³ + 11xÂ² - 144x - 396 = 0
xÂ²(4x + 11) - 36(4x + 11) = 0
(4x + 11)(xÂ² - 36) = 0
(4x + 11)(x + 6)(x - 6) = 0
x = -11/4, -6, 6

2007-09-28 21:03:08 · answer #2 · answered by Marvin 4 · 0⤊ 0⤋

you typed the question in wrong.... it dosent make sense... what is 4x 3?
4x what to 3

2007-09-28 20:59:36 · answer #3 · answered by life is what you make of it. 1 · 0⤊ 0⤋

use PEMDAS!

2007-09-28 20:57:51 · answer #4 · answered by Hua Zhi X 1 · 0⤊ 0⤋