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7. Algebraic Expression, Identities and Factorisation
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Q56 of 128 Page 224

Fill in the blanks to make the statements true:

The side of the square of area 9y2 is ………. .

3y

Area of a square = (side)2


⇒ 9y2 = (side)2


Taking square root on both sides, we get,


side =


To find the square root of a monomial, we find the square roots of the coefficient and variables separately.


Now, 9y2 = (3y)2


Thus, side of square = 3y


More from this chapter

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54

Fill in the blanks to make the statements true:

The sum of areas of two squares with sides 4a and 4b is ………………. .

55

Fill in the blanks to make the statements true:

The common factor method of factorisation for a polynomial is based on ………….. property.

57

Fill in the blanks to make the statements true:

On simplification = …….. .

58

Fill in the blanks to make the statements true:

The factorisation of 2x + 4y is ………. .

Questions · 128
7. Algebraic Expression, Identities and Factorisation
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