Question

$49 - {x }^{2} - {y }^{2} + 2xy$
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Answer 1

Answer:

${7}^{2} - {x}^{2} - {y}^{2} + 2xy \\ {7}^{2} - ( {x}^{2} + {y}^{2} - 2xy) \\ according \: to \: this \: formula \: {a}^{2} - {b}^{2} = (a + b)(a - b) \\ {7 + (x - y)}{7 - (x - y)} \\ (7 + x - y)(7 - x + y) \\ plz \: mark \: as \: brainlist \: answer$

Answer 2

Answer:

(7 - x + y) (7 -x - y)

Solution:

49 - x² - y² + 2xy

7² - (x² + y² - 2xy)

By identity, (a-b)²=a²+b²-2ab

7² - (x - y)²

By identity, a²-b²=(a+b) (a-b)

=> (7 - x + y) (7 -x - y)

PLEASE MARK BRAINIEST