1.

If (2 + p) and 100 – 25p2 are two expression, then their L.C.M. will be(A) 100 – 25p2(B) 2 + p(C) 98 – 25p2(D) (100 – 25p2) (2 + p)

Answer»

Answer is (A) 100 – 25p2

First expression = (2 + p)

and other expression = 100 – 25p2

= (10 – 5p) (10 + 5p)

= 5(2 – p) × 5(2 + p)

= 25(2 – p) (2 + p)

Thus L.C.M. of two expression = 100 – p2


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