Practicing Success

Target Exam

CUET

Subject

General Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If a  + b = $\sqrt{7}$ and a - b = $\sqrt{5}$, then find the value of $8ab (a^2 + b^2) - ( a - b)^2$.

Options:

19

23

27

21

Correct Answer:

19