Question

first term of an A is 10 and its common difference is 4​

Answer 1

Answer:

The first terms in an arithmetic sequence are a,a+d,a-2d where a is 1st term and d is common difference, so the three terms are 10, 10 + 3, 10 +2* 3 = 10, 13, 10

Answer 2

Step-by-step explanation:

t= (4-10). (given )

t =(4×1-10)= -6

t= (4×2-10)= - 2

t=(4×3. -10) =2

t=(4×4-10) =6

clearly ,[-2-(-6)]=[-2(-2)]=[6-2]=4