2 years ago

Simplify:

ex-formula"> - xy + yx - $y^{2}$

Mathematics

1 answer:

fiasKO [112]2 years ago

5 0

Please find attached photograph for your answer. Don't forget to mark me Brainliest if you like my answer

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Let ∠RTS=∠RST = a (say)
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then we know , at point S, a+40+b=180. so, a+b=140 we'll use this later.

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