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storchak [24]
3 years ago
6

(5x-1)(3x+2)(9x-4) simply

Mathematics
2 answers:
dimaraw [331]3 years ago
8 0

Answer:

135x^3 + 3x^2 - 46x + 8.

Step-by-step explanation:

(5x-1)(3x+2)(9x-4)

= (5x - 1)(27x^2 + 18x - 12x - 8)

=  (5x - 1)(27x^2 + 6x - 8)

= 5x(27x^2 + 6x - 8) - 1(27x^2 + 6x - 8)

= 135x^3 + 30x^2 - 40x - 27x^2 - 6x + 8

= 135x^3 + 3x^2 - 46x + 8.

xz_007 [3.2K]3 years ago
4 0

Step-by-step explanation:

= ( 5x - 1 ) ( 3x + 2 ) ( 9x - 4 )

= 5x ( 3x + 2 ) - 1 ( 3x + 2 ) ( 9x - 4 )

= 15x² + 10x - 3x - 2 ( 9x - 4 )

= ( 15x² + 7x - 2 ) ( 9x - 4 )

= 15x² ( 9x - 4 ) + 7x ( 9x - 4 ) - 2 ( 9x - 4 )

= 135x³ - 60x² + 63x² - 28x - 18x + 8

= 135x³ + 3x² - 46x + 8

...

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