1.

Factories (x+y)^2-11(x+y)-42​

Answer»

Answer:

(x+y+3) (x+y-14)

Step-by-step EXPLANATION:

(x+y) ^2 -11 ( x+y ) -42

Let considered (x+y) be A

Now, A^2 - 11A -42

= A^2 - 14A +3A - 42

= A (A-14) +3 (A-14)

= (A-14) (A+3)

PUTTING value of A ,

= (x+y-14) (x+y+3)


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