11th Class Maths Unit 4 Test

• 1 A
• 0 B
• 2 C
• 3 D

A numbers exceeds its square root by 6, the number is:

• 6 A
• 3 B
• 9 C
• none of these D

Sum of roots of ax² + bx + c = 0 is equal to product of roots only if:

• a+c=0 A
• b+c=0 B
• a+b=0 C
• a+b+c=0 D

The ration of the sum and product of roots of 7x² - 12x + 18 = 0 is:

• 7:12 A
• 2:3 B
• 3:2 C
• 7:18 D

In ax² + bx + c = 0, if b² - 4ac > 0 and perfect square the roots are:

• rational A
• irrational B
• equal C
• complex D

The ration of the sum and product of roots of 7x² - 12x + 18 = 0 is:

• 7:12 A
• 2:3 B
• 3:2 C
• 7:18 D

The other name of quadratic equation is:

• linear equation A
• 1st degree equation B
• 2nd degree equation C
• none D

If P(x) is a polynomial of degree m and Q(x) is a polynomial of degree n, the product P(x) . Q(x) will be a polynomial of degree:

• m . n A
• m - n B
• m + n C
• m × n D

For what value of k, the roots of the equation x² + √k x + 2 = 0 are equal:

• 1 A
• 8 B
• 2 C
• 4 D

Which one is exponential equation:

• ax² + bx + c = 0 A
• ax + b = 0 B
• 
  C
• 2^x = 16 D

If α, ß are the roots of x² + kx + 12=0 such that α-ß = 1 then K = :

• 0 A
• ±5 B
• ±7 C
• ±15 D

For what value of k, the sum of the roots of the equation x² + kx + 4 = 0 is equal to the product of its roots:

• ±1 A
• 4 B
• ±4 C
• -4 D

If α, ß are complex cube roots of unity, then 1 + αⁿ + ßⁿ = .......... where n is a positive integer divisible by 3:

• 1 A
• 3 B
• 2 C
• 4 D

If the sum of the roots of ax² - (a + 1) x + (2a + 1) = 0 is 2, then the product of the roots is:

• 1 A
• 2 B
• 3 C
• 4 D

• quadratic equation A
• reciprocal equation B
• exponential equation C
• none of these D

• linear equation A
• Quadraticequation B
• cubicequation C
• radicalequation D

In ax² + bx + c = 0, if b² - 4ac > 0 and perfect square the roots are:

• rational A
• irrational B
• equal C
• complex D

The roots of the equation:

• complex A
• irrational B
• rational C
• none of these D

Four fourth roots of 625 are:

• ±5,±5i A
• ±5,±25i B
• ±25,±25i C
• none of these D

If the Discriminant of a quadratic equation is a perfect square, then roots are:

• real and equal A
• complex B
• rational C
• irrational D