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10th CBSE
IMPORTANT
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The roots of a quadratic equation are 5 and -2. Then, the equation is

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Important Questions on Quadratic Equations

EASY
10th CBSE
IMPORTANT
Secondary School Mathematics for Class 10>Chapter 4 - Quadratic Equations>TEST YOURSELF>Q 13
If the sum of the roots of a quadratic equation is 6 and their product is 6, the equation is
EASY
10th CBSE
IMPORTANT
Secondary School Mathematics for Class 10>Chapter 4 - Quadratic Equations>TEST YOURSELF>Q 14
If α and β are the roots of the equation 3x2+8x+2=0 then 1α+1β=?
EASY
10th CBSE
IMPORTANT
Secondary School Mathematics for Class 10>Chapter 4 - Quadratic Equations>TEST YOURSELF>Q 15
The roots of the equation ax2+bx+c=0 will be reciprocal each other if
EASY
10th CBSE
IMPORTANT
Secondary School Mathematics for Class 10>Chapter 4 - Quadratic Equations>TEST YOURSELF>Q 16
If the roots of the equation ax2+bx+c=0 are equal, then c=?
EASY
10th CBSE
IMPORTANT
Secondary School Mathematics for Class 10>Chapter 4 - Quadratic Equations>TEST YOURSELF>Q 17
If the equation, 9x2+6kx+4=0 has equal roots, then k=?
EASY
10th CBSE
IMPORTANT
Secondary School Mathematics for Class 10>Chapter 4 - Quadratic Equations>TEST YOURSELF>Q 18
If the equation x2+2(k+2)x+9k=0 has equal roots then k=?
EASY
10th CBSE
IMPORTANT
Secondary School Mathematics for Class 10>Chapter 4 - Quadratic Equations>TEST YOURSELF>Q 19
If the equation 4x2−3kx+1=0 has equal roots, then k=?
EASY
10th CBSE
IMPORTANT
Secondary School Mathematics for Class 10>Chapter 4 - Quadratic Equations>TEST YOURSELF>Q 20
The roots of ax2+bx+c=0,a≠0 are real and unequal, if (b2−4ac) is