Determine if the linear system 3x1-3x2-2x3=0
−3x3=−7
−x2−3x3=15 is in echelon form
If the system is in echelon form, also identify the leading variables and the free variables in the corresponding answer blanks below. Type x1, x2, and x3 to enter the variables x1, x2, and x3 and separate multiple variables by using a comma. If the system is in echelon form and no such variable exist, type none. If the system is not in echelon form, type NA in both answer blanks.
Leading variable(s):
Free variable(s):

Demonstrate the proof of your new polynomial identity through an algebraic proof and a numerical proof in an engaging way! make it so the whole world wants to purchase your polynomial identity and can't imagine living without it! you must: label and display your new polynomial identity prove that it is true through an algebraic proof, identifying each step demonstrate that your polynomial identity works on numerical relationships create your own using the columns below. see what happens when different binomials or trinomials are combined. square one factor from column a and add it to one factor from column b to develop your own identity. column a column b (x − y) (x2 + 2xy + y2) (x + y) (x2 − 2xy + y2) (y + x) (ax + b) (y − x) (cy + d)

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Solve for b. ab + c= d b= a + old ob=allc-ch b= (d-c/a