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Q.10. How much larger is 9 x 2 - 8 y 2   t h a n   5 x 2 - 3 y 2 ?

Dear Student,

(9x2-8y2)-(5x2-3y2)=(9-5)x2+(-8+3)y2=4x2-5y2Hence,9x2-8y2 is larger then 5x2-3y2 by 4x2-5y2
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