Question

x^ 2 +y^ 2 +2xy-121
factroise​

Answer 1

Answer:

$x^ 2 +y^ 2 +2xy-121$

                Using the formula, $(x+y)^2=x^2+2xy+y^2$

$(x+y)^2-121$

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

                Using the formula, $a^2-b^2=(a+b)(a-b)$

$(x+y+11)(x+y-11)$

Answer 2

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