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प्रश्न
Factorize each of the following expression:
25x4y4 − 1
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उत्तर
\[25 x^4 y^4 - 1\]
\[ = (5 x^2 y^2 )^2 - 1\]
\[ = (5 x^2 y^2 - 1)(5 x^2 y^2 + 1)\]
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A contractor uses the expression 4x2 + 11x + 6 to determine the amount of wire to order when wiring a house. If the expression comes from multiplying the number of rooms times the number of outlets and he knows the number of rooms to be (x + 2), find the number of outlets in terms of ’x’. [Hint : factorise 4x2 + 11x + 6]
