How to factories x2+2xy - 99y2
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x2 +(11-9)xy-99y2
x2 + 11xy -9xy -99y2
x(x+11y) - 9y(x+11y)
(x+11y)(x-9y) - ans
x2 + 11xy -9xy -99y2
x(x+11y) - 9y(x+11y)
(x+11y)(x-9y) - ans
Answered by
5
Heya,
Factorise x^2 + 2xy - 99y^2 [Using splitting the middle term]
=> x^2 + 2xy - 99y^2
=> x^2 + 11xy - 9xy - 99y^2
=> x (x + 11y) -9y (x + 11y)
Hence,
The factors are (x - 9y) & (x + 11y)
Hope my answer helps you :)
Regards,
Shobana
Factorise x^2 + 2xy - 99y^2 [Using splitting the middle term]
=> x^2 + 2xy - 99y^2
=> x^2 + 11xy - 9xy - 99y^2
=> x (x + 11y) -9y (x + 11y)
Hence,
The factors are (x - 9y) & (x + 11y)
Hope my answer helps you :)
Regards,
Shobana
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