1.

D = = [ x (-3)] - [ 2 x ] = [ 2]2 -3= ii) àW‘ nX 3 Am{U gmYmaU ’$aH$ 5 Va t20 =?a = 3 , d = 5 , n = 20 , t20 = ?tn = [ + ( n – 1 ) d ]∴ t20 = [ 3 + ( – 1 ) x 5 ]t20 = + 1 9 x 5∴ t20 =​

Answer»

Answer:

kyo ITNA TANG hore ho padho likho IAS wais bno

Explanation:

best of luck

d = b(square) - 4AC



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