What is 21/75 simplified sorry guys really bad at this

Find the zeros of the function. write the smaller solution first, and the larger solution second f(x)= (x+6)^2-49

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality