Ask a New Question

Asked by kelly

Given that x+2y=4,determine the minimum value of x^2+xy-y^2.
9 years ago

Answers

Answered by Damon
x = 4-2y

V = value =(4-2y)^2 + (4-2y)y - y^2
V = 16 - 16 y + 4y^2 + 4 y -2 y^2 -y^2
V = y^2 - 12 y + 16
so
y^2 - 12 y = V-16

y^2 - 12 y + 6^2 = V - 16 + 36

(Y-6)^2 = V+20
vertex at v = -20
9 years ago

Related Questions

Determine the zero(s) of the quadratic function y=2x2+9x+4 .(1 point) Responses You are going to determine how you would critique different art styles/work. Consider as many charac... You are going to determine how you would critique different art styles/work. Consider as many charac... Determine whether the given ordered pair is a solution of the system of equations. Remember to use a... Determine whether the following aspects of The U.S Government are originally inspired by Greek ideas... Determine whether the second scenario would be dependent or independent of the first scenario. Expla...
Ask a New Question
Archives Contact Us Privacy Policy Terms of Use