x²+5xx+7=9
3 $\sqrt{\Box}$ 81 $a_{b}$ 3
y
=
(
x
2
−
5
+
1
)
12
3
(4x-7) $^{2}$ =16
(b+c-a)/(a-b)(a-c) + (c+a-b)/(b-c)(b-a) + (a-b-c)/(c-a)(c-b)
p → q ,s → ¬q, ¬s → p, q ∴ (¬s ∧ p) by rule of interference
find the eigenvalues and eigenvectors of the matrix ( 3 -1 1) ,(-1 5 1),(1 -1 3)
11
-5
Prove that For any set A, A\0 = A.