Question

factorise 14(3x-5y)³+7(3x-5y)²​

Answer 1

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Hey Mate!!

Let (3x - 5y) = a.

→ 14(3x - 5y)³ + 7(3x - 5y)²

→ 14a³ + 7a²

→ 7a² (2a + 1)

→ 7(3x - 5y)² [2(3x-5y) + 1]

→ 7(3x - 5y)(3x - 5y)(6x - 10y + 1)

Answer 2

Answer:

Step-by-step explanation:

Let (3x - 5y) = a.

→ 14(3x - 5y)³ + 7(3x - 5y)²

→ 14a³ + 7a²

→ 7a² (2a + 1)

→ 7(3x - 5y)² [2(3x-5y) + 1]

→ 7(3x - 5y)(3x - 5y)(6x - 10y + 1)