JEE MATHEMATICS MCQ: QUADRATIC EQUATIONS

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Application +4 | -1

If the first, second and the last terms of an A.P. are

a, b, c

respectively, then the sum is

\frac{(a+b)(a+c-2 b)}{2(b-a)}

\frac{(b+c)(a+b-2 c)}{2(b-a)}

View answer and explanation

Correct option: C

\frac{{\left( {b + c} \right)\left( {a + b - 2c} \right)}}{{2\left( {b - a} \right)}}

Option C (

\frac{{\left( {b + c} \right)\left( {a + b - 2c} \right)}}{{2\left( {b - a} \right)}}

) is correct because it represents the sum of an arithmetic progression with given first, second, and last terms.

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