Question

factorise 63x^2-112y^2

Answer 1

Answer:

7 ( 3x + 4y) (3x - 4y)

Step-by-step explanation:

63x² - 112y²

Take out common factor 7:

= 7(9x² - 16y²)

Write in perfect squares:

= 7 [ (3x)² - (4y)² ]

Apply a² - b² = (a + b)(a - b):

= 7 ( 3x + 4y) (3x - 4y)

Answer: 7 ( 3x + 4y) (3x - 4y)

Answer 2

63x^2-112y^2

=7(9x^2-16y^2)

=7((3x)^2-(4y)^2)

=7(3x-4y)(3x+4y)

Hope it helps !!!!!!!!

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