Question

If x = 3 and y = 4 find the value of the following (a) x² + y²​

Answer 1

Step-by-step explanation:

x+y =7

(x+y)^2 =7^2

By squaring both sides

x^2+y^2 + 2xy= 49

x^2+y^2 + 2*3*4=49

x^2+y^2+24 =49

x^2+y^2 =49 -24 = 25

Therefore x^2+y^2 =25

Answer 2

Answer:

$x = 3 \: and \: y = 4$

then, putting the value ,

${x}^{2} + {y}^{2}$

$= {3}^{2} + {4}^{2}$

$= 9 + 14$

$= 25$