Mix Test 1

Result

Mix Test 1

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
1 / -0

A polynomial whose sum and product of zeroes are – 4 and 3 is

A
none of these

B
x² − 4x + 3

C
x² + 4x + 3

D
x² − 4x − 3

Solution

Explanation:

x²- (Sum the Zeroes )x + (Product of Zeroes)

x²- (-4)x + 3

= x² + 4x + 3
Question 2
1 / -0

The lines representing the pair of equations 5x – 4y + 8 = 0 and 7x + 6y – 9 = 0

A
are coincident

B
none of these

C
are parallel

D
intersect at a point

Solution

Explanation:

=a1/a2=5/7

=b1/b2=-4/6

Since a1/a2 ≠ b1/b2

∴ lines are intersecting at a point
Question 3
1 / -0

If a, b and c are in A.P, then b =

A
a+c/2

B
a−c/2

C
c−a/2

D
none of these

Solution

Explanation:

If a,b and cc are in A.P., then

b - a = c - b

2b = a + c

b=a+c/2