Question

1.check whether 90 is a perfect square or not by using prime factorisation method.​

Answer 1

Answer:

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Step-by-step explanation:

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Answer 2

In mathematics, a square number or perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with itself.

Clearly if we consider this, we can see that

1*1=1 is a perfect square. Similarly 4(2*2), 9(3*3), 16(4*4), 25(5*5), 36(6*6), 49(7*7), 64(8*8), 81(9*9), 100(10*10) …………. and so on are perfect squares.

Since 90 lies between 81 an 100 and their is no integer between 9(sq root of 81) and 10(sq root of 100), thus 90 can’t be termed as a perfect square.

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