Please help me with these two questions;-; Solve 5x^2= 180 algebraically ( the 5x is squared)

Solve the quadratic equation for the exact values of x
4x^2-5=75

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters.

Ammonia molecules have three hydrogen atoms and one nitrogen atom.how many of each atom arein five molecules of ammonia

Given: jk ||lm prove: _2 = 27 statement justification 1. jk ||lm 1. given 2.26 = 27 3.22 = 26 2. 3. 4. _2 = 27 4. corresponding angles theorem transitive property of equality vertical angles theorem substitution property of equality