Question

Factorise 49x^2-4(y+3x)^2

Answer 1

Answer :—

= 49x² - 4( y + 3x )²

= (7x)² - (2(y + 3x))²

• Using identity a² - b² = ( a - b )( a + b )

= (7x - (2(y + 3x) (7x + (2(y + 3x)

= (7x - 2y - 6x)(7x + 2y + 6x)

• Collect like terms

= (x - 2y )(13x + 2y )

★Hence, the factors are (x - 2y ) and (13x + 2y )

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Answer 2

Step-by-step explanation:

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