If xy = 16 and $x^2 + y^2 = 32, $ then t

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Target Exam

CUET

Subject

General Aptitude Test

Chapter

Quantitative Reasoning

Topic

Algebra

Question:

If xy = 16 and $x^2 + y^2 = 32, $ then the value of (x + y) is :

Options:

±4

±10

±6

±8

Correct Answer:

±8

Explanation:

If xy = 16

$x^2 + y^2 = 32, $

then the value of (x + y) is= ?

Put the value of x and y = ±4 ( These values will satisfy the given equation.)

(x + y) = (±4 + ±4) = ±8