2013 · Q10
If x+y−7=0 and 3x+y−13=0, then what is 4x²+y²+4xy equal to?
Elementary MathematicsAlgebra
- A75
- B85
- C91
- D100
Explanation
x=3,y=4; (2x+y)²=100. Answer D.
If x+y−7=0 and 3x+y−13=0, then what is 4x²+y²+4xy equal to?
Explanation
x=3,y=4; (2x+y)²=100. Answer D.