Subtract: 2x^2−3xy+4y^2 from 3x^2−5xy−6y^2 x^2+4xy−3y^2 from 2x^2−5xy+y^2 4x^3−6x^2+8x−9 from 7x^3−16x+18

Acircle has a circumference of 28.36 units what is the diameter of the circle

Rhombus adef is inscribed into a triangle abc so that they share angle a and the vertex e lies on the side bc . what is the length of the side of the rhombus if ab=c, and ac=b.

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