Question

hii
solve it fast
find the first term and common difference also​

Answer 1

Step-by-step explanation:

Given 3rd term = 25

= a+ 2d = 25 ......1

Given 10th term = -3

= a+ 9d = -3.....2

solving 1 and 2

a + 2d = 25

a + 9d = -3

___________

-7d = 28

d = -28/7 = -4

therefore, common difference (d) = -4

a + 2d = 25

a + 2(-4) = 25

a = 25+8 = 33

therefore first term (a) = 33

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Answer 2

Step-by-step explanation:

$\huge \boxed{\underbrace{\mathfrak {\underline {\fcolorbox {black}{pink}{Answer}}}}}$

3rd term of AP=25

$\implies { a+2d=25...........(1) }$

10th term of AP=-3

$\implies {a+9d=-3.............(2) }$

solving equation1 and equation2,we got

$\implies { d=-4 }$

then..put the value ${ d=-4 }$in equation1

$\implies { a+2d=25 }$

$\implies { a+2(-4)=25 }$

$\implies { a=25+8 }$

$\implies { a=33 }$

we get that..

$\boxed { d=-4 \:And \:a=33 }$