Question
Determine the value of m so that the equation x² + mx + 25
= 0 has equal and real roots.Solution
ATQ,
Condition for equal roots: Discriminant = 0
m² - 4×1×25 = 0
⇒ m² = 100
⇒ m = ±10
In a certain code language,
X + Y means 'X is the father of Y'
X - Y means 'X is the brother of Y',
X X Y means 'X is the sister of...
Answer the following question based on the direction given below. If 'A#B' means 'A is father of B' 'A@B' means 'A is brother of B' 'A$B' means 'A is so...
Answer the questions based on the information given below.
D % E means D is the wife of E.
D @ E means D is the son of E.
D $ E m...
If U $ V @ W + Y * Z is true, then how is Z related to W?
If U&V$Y@W%Z is true then how is U related to Z?
P + Q means ‘P is the brother of Q’, P - Q means ‘P is the daughter of Q’, P ÷ Q means ‘P is the husband of Q’, P × Q means ‘P is the so...
A $ B' means 'A is the mother of B'. 'A % B' means 'A is the wife of B'. 'A @ B' means 'A is the sister of B'. 'A # B' means 'A is the son of B'. If 'T ...
Answer the questions based on the information given below.
L + M means L is the wife of M.
L ? M means L is the son of M.
L > M m...
‘A # B’ means ‘A is the brother of B’
‘A @ B’ means ‘A is the daughter of B’.
‘A & B’ means ‘A is the husband of B�...
If J & I @ H + G is true then, how is G related to J?
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