Question

Please help me! Can't figure these out. 

Answer 1

For this case we have the following expression:
 $\sqrt{x+3} + 4 = 5$
 To solve it, we follow the following steps:
 We subtract 4 on both sides of the equation:
 $\sqrt{x+3} + 4 - 4 = 5 - 4$
 We rewrite the expression:
 $\sqrt{x+3} = 1$
 We square both sides of the equation:
 $(\sqrt{x+3})^2 = 1^2$
 $x+3 = 1$
 We subtract 3 on both sides of the equation:
 $x + 3- 3 = 1 - 3$
 We rewrite the expression:
 $x= - 2$
 Answer:
 The solution of the equation is:
 $x= - 2$

Answer 2

√(x + 3) + 4 = 5

first subtract 4 from both sides to isolate the x.

√(x + 3) + 4 (-4) = 5 (-4)


√(x + 3) = 5 - 4


√(x + 3) = 1

Next, get rid of the root by squaring both sides


(√(x + 3))² = (1)²

x + 3 = 1

Finally, isolate the x. Subtract 3 from both sides

x + 3 (-3) = 1 (-3)

x = 1 - 3

x = -2

x = -2 is your answer

hope this helps