Question

Sum of two numbers is 15 and their differences is 7 ,then the sum of their squares is 1)15 2)147. 3)137 4)115

Answer 1

Answer:

Let the nos be x,y

x+y=15

x-y= 7

solving 2x=22

x = 22/2=11

y=4

squares of,x andy=x2 andy2

= 11^2 and 4^2

11^2+4^2 = 121+16=137. Ans