15-09-2020
Mathematics

contestada

what is the sum of the first 20 terms of the AP 4,2,0

Respuesta :

bhh9019 bhh9019

15-09-2020

bababbabababbababbabababbababa

Answer Link

dabberbardan dabberbardan

15-09-2020

Answer:

-420

Step-by-step explanation:

common difference= 2-4 =-2

we have,

first term=4

now using the formula,

S=N/2(2a+(n-1)d

so the answer is -420

Answer Link

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{(a^2-16)÷(a^2-25)}÷{(a^2-2a-8)÷(a^2+10a+25)}