AP members

What is the value of x2, x3, x4, x5…of the terms (of arithmetic progression) when x1 = 8 and x6 = 20?

Correct result:

x2 =  10.4
x3 =  12.8
x4 =  15.2
x5 =  17.6

Solution:

${x}_{3}={x}_{2}+d=10.4+2.4=\frac{64}{5}=12.8$
${x}_{4}={x}_{3}+d=12.8+2.4=\frac{76}{5}=15.2$
${x}_{5}={x}_{4}+d=15.2+2.4=\frac{88}{5}=17.6$

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