Does anyone know this? Need it ASAP.

Step-by-step explanation:

We have the equation:

we know that:

14*14 = 196

then:

14 = √196

Now, we can rewrite:

50 = 2*25

98 = 2*49

This is because we know that 49 and 25 are perfect squares, then:

Now we can use the common factor √2 and get:

and we know that:

7*7 = 49

5*5 = 25

then:

the value of b is:

b = 12

step-by-step explanation: