Answer to Question #225315 in Linear Algebra for Anuj

Question #225315

4x^2+3y^2+z^2-8xy-6yz+4zx

Expert's answer

"4x^2+3y^2+z^2-8xy-6yz+4zx\\\\\n=x^2+y^2+z^2-2xy-2yz+2zx+3x^2+2y^2-6xy-4yz\\\\\n=(x-y+z)^2+2(x^2+y^2-2xy)+x^2-2xy-4yz\\\\\n=(x-y+z)^2+2(x-y)^2+x^2-2xy-4yz"

Learn more about our help with Assignments: Linear Algebra

Comments

No comments. Be the first!

Leave a comment

Related Questions

1. Let u=(2,6,-7), v=(-1,-1,8), and 3. If (2, 14, 11)=ku+lv what is the value of l?
2. Let u=(2,6,-7), v=(-1,-1,8), and 3. If (2, 14, 11)=ku+lv what is the value of l?
3. Let u=(2,6,-7), v=(-1,-1,8), and 3. If (2, 14, 11)=ku+lv what is the value of l?
4. Prove that V1"\\cap" V2 is a subspace of W if and only if V1"\\subseteq" V2 or V2⊆V1 in which V1
5. Can 2 be a entry of a unitary matrix? Answer with reason.
6. Matrix A is 2x2 matrix Let A = [(1) (4) (3) (5)] 1.a Find A^-1 by using row operations 1.b Use
7. Let W be the set of all vectors o the form [ 5b + 2c b c ] where b and c are arbitrary. Find vecto