You visited us 1 times! Enjoying our articles? Unlock Full Access!

(a + b)^2 Expansion and Visualisation

If x+y=8, ...

Question

If $x + y = 8$ , $x y = 15$ , then the value of $x^{2} + y^{2}$ will be

32

No worries! We‘ve got your back. Try BYJU‘S free classes today!

34

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

36

No worries! We‘ve got your back. Try BYJU‘S free classes today!

38

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B $34$
$x^{2} + y^{2} = (x + y)^{2} - 2 x y = 64 - 2 \times 15 = 34$

Suggest Corrections

Similar questions

x + y = 8, x y = 15

x^{2} + y^{2}

If $x + y = 12$ and $x y = 32$ , find the value of $x^{2} + y^{2}$ .

x y = 5

(x + y) = 36

x^{2} + y^{2}

x = 997

y = 998

z = 999

x^{2} + y^{2} + z^{2} - x y - y z - z x

x - y = 7

x y = 8

(x^{2} + y^{2})

Join BYJU'S Learning Program