1.

The area of a square is (25a+ 70a + 49). Find its side.

Answer»

ANSWER:

if we add 25+70+49

we get 144 which is a perfect square number

hence it will be like

25a + 70 a + 49  \\   \\ a^{2}  = 144 \\ a =  12

hence a is a side of square as area of square is

2

side

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