Show all ! the base of a triangle measures (8x + 2) units and the height measures (4x − 5) units. part a: what is the expression that represents the area of the triangle? show your work to receive full credit. (4 points) hint: area = 0.5bh part b: what are the degree and classification of the expression obtained in part a? (3 points) part c: how does part a demonstrate the closure property for polynomials? (3 points)

Part A: We know that the equation for finding the area of a triangle is ; we also know that  and , so the only thing we need to do is replacing those values into our Area equation and solve for x:




Now the only thing left is factor the quadratic polynomial:


W can conclude that the area of our triangle is

Part B: Our polynomial has three terms, so is a trinomial; also, our polynoal only has one variable, , and the largest exponent of that variable is 2; therefore is a degree 2 polynomial. In summary, we have a trinomial of degree 2. 

Part C: Part A demonstrate the closure property of polynomials because after multiplying tow polynomials we obtained another polynomial.

Your maths is very weak try yourself this would improve your skills don't depend on others