Question

X2+xy+9x+9y...factorise by regrouping

Answer 1

Step-by-step explanation:

x^2+xy+9x+9y

(x^2+9) (xy+9y)

x(x+9)y(x+9)

(x+y) (x+9)

Answer 2

Step-by-step explanation:

Given:

${x}^{2} + xy + 9x + 9y$

To find: Factorisation by grouping

Solution:

To factorise the given expression

by inspection,one can see that,

x is common in first two terms and 9 in last two terms

${x}^{2} + xy + 9x + 9y \\ \\ = x(x + y) + 9(x + y) \\ \\ =( x + y)(x + 9) \\ \\\bold{ {x}^{2} + xy + 9x + 9y =( x + y)(x + 9)}$

Hope it helps you.

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