Question

(x) - 4y (15x + 12y - 8z) (x - 2y)​

Answer 1

Answer:

5(x - 2y)² - 8(x - 2y) - 16

Let (x - 2y) = m

15m² - 8m - 16

= 15m² - 20m + 12m - 16

= 5m( 3m - 4) + 4( 3m - 4)

= (5m + 4)(3m - 4)

now, put m = (x - 2y)

= {5(x - 2y) + 4}{3(x - 2y) - 4}

={5x - 10y + 4}{3x - 6y - 4}

=(5x - 10y + 4)(3x - 6y - 4)

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