Question

x square minus y square + 6 Y - 9 factorisation​

Answer 1

Step-by-step explanation:

Hyy friend

Here is ur ans....

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Answer 2

Answer:

$(x - y + 3)(x + y - 3)$

Step-by-step explanation:

factor out negative sign from equation

${x}^{2} - {y}^{2} + 6y - 9$

${x}^{2} - ( {y}^{2} - 6y + 9)$

use identity

${x}^{2} - 2xy + {y}^{2}$

${x}^{2} - {(y - 3)}^{2}$

use another identity

$(a - b) ^{2} = (a + b)(a - b)$

$(x - (y - 3))(x +(y - 3))$

open the brackets

$(x - y + 3)(x + y - 3)$

when there is a negative or a positive sign in front of a bracket the sign gets distributed in the bracket

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