If (x + 3)² = 42, what is the approximate positive value of x?

Solution:

Given, (x + 3)² = 42 

⇒ (x + 3) = ± √42

x = -3 ± √42

For positive value, x = -3 + √42,

 because x = - 3 - √42 = - 3 - (number greater than 6) = - (number greater than 9) 

ஃ x = -3 + 6.48

x = 3.48

If (x + 3)2 = 42, what is the approximate positive value of x?

Summary:

If (x + 3)2 = 42, the approximate positive value of x is 3.48.