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Y and A Tutoring Paper 1 with Answers and Hints · Q12

Paper 1Algebra

Find the number of real pairs (x,y)(x,y) that satisfy the following simultaneous equations:

3x+9y=10,3y+9x=10.3^x+9^y=10,\qquad3^y+9^x=10.
A00
B11
C22
D33
E44

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