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3 – If r = -1 and frist term is 1/2 find the sum of the 10 terms of a Gp

4 - Use mathematical induction to prove that 2 + 4 + 6 ……..+ 2n = n(n+1)

5 – Expand ( 2x – 3y)^4 by using binomial formula

Notice :

D. Mark i can't type my work into the text entry box. i put it in attachment i'm very sorry

4 - Use mathematical induction to prove that 2 + 4 + 6 ……..+ 2n = n(n+1)

5 – Expand ( 2x – 3y)^4 by using binomial formula

Notice :

D. Mark i can't type my work into the text entry box. i put it in attachment i'm very sorry