Question

G NÉ
CLASS-9
MATHEMATICS
Ch1,2 NUMBER SYSTEM AND POLYNOMIALS
1. If x + y = 12 and xy = 32, Find the value of x² + y².​

Answer 1

Given:

• x + y = 12
• xy = 32

To find: x² + y² = ?

Solution:

∴ x² + y² = (x + y)² - 2xy

= 12² - 2 (32)

= 144 - 64

= 80

Answer 2

Step-by-step explanation:

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