Choose the polynomial written in standard form. x^2y^2 + 4x^4y + 10x^6 x^4y^2 + 4x^3y^5 + 10x x^7y^2 + 4x^3y + 10x^3 x^6y^2 + 4x^3y^8 + 10x^2

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