Question
Question: x + y = 7 and ax<sup>2</sup> + 2hxy + ay<sup>2</sup> = 0, (a ¹ 0) are three real distinct lines form...
x + y = 7 and ax2 + 2hxy + ay2 = 0, (a ¹ 0) are three real distinct lines forming a triangle then the triangle is –
A
Isosceles
B
Scalene
C
Equilateral
D
Right angled triangle
Answer
Isosceles
Explanation
Solution
ax2+2hxy+ay2 = 0 is symmetrical about y = x
