Question

if x + y =root 7 and x - 5 = root 5 find the value of x square + y square​

Answer 1

Answer:

Given, x=5

Lets evaluate y=x+7=5+7=12

Now for given expression, its value at given x=5 and y=12 is

Therefore,

x

2

+y

2

=

5

2

+12

2

=

25+144

=

169

=13