Question

If x=√7+√5.xy=2 then what is the value of y

Answer 1

(√7+√5)y=2

y=2/√7+√5

rationalizing the denominator

2(√7-√5)/2

√7-√5=y

Answer 2

Answer:

3.5×10^-1

Step-by-step explanation:

given

x=√7+√5.xy=2

put x=2. √20y = -√7

squrring on both sides

20y=7y

y=7÷20=0.35