Find the value of x by filling the blanks in the provided statement-reason solutions. a Statement Reason 1. m∠A +m∠B +m∠C = 2. 28°+x−4° + = 180° 3. x = 1. 2. Substitution 3. Algebra Statement Reason 1. m∠A + m∠B + m∠C = 2. 28° + x − 4° + = 180° Substitution 3. x = Algebra

1.) m∠A +m∠B +m∠C = (sum of angles in a triangle △)

2.) 24° + x + m∠C = 180°

3.) x = 156° - m∠C

step-by-step explanation:

1. m∠A +m∠B +m∠C = (sum of angles in a triangle △)

2. 28°+x−4° + = 180°

24° + x + m∠C = 180°

3) x = 180° - 24° - m∠C

x = 156° - m∠C

(5x-1)^2= (5x)^2-2(5x)×1+(1)^2=25x^2-10x+1