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Answered by
1
Step-by-step explanation:
a) (2xy + 5y)2
= 4x2y2 + 20xy2+ 25y2
b) 51 2 - 49 2
= 2601 - 2401
= 200(Ans)
Answered by
2
Answer:
1st Ans is 4 x square y square+20X .y square+25y square
2nd ans is 200
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