mathematics,class10

1. 1.a_______equation in a variable x of form ax2+bx+c=0 where a,b,c are real no.
3. 13.write the common difference of an A.P. whose nth term is an=3n+7
5. 10. it is the arrangement of no. whose element follows certain general pattern either from the beigning or after some term are called_________
8. 9. the fixed no.that are adding to preceding term is called_____________
10. 18.the common point of a tangent to a circle and the circle called______________
12. 7.each of the no. in the list is called a ________
13. 14.write the value of x for which 2x,x+10and 3x+2 are in A.P.
14. 3.in a quadratic equation ax2+bx+c=0 this is represent by b2-4ac
17. 17.a circle can have_______ parallel tangent

2. 8.successive term are obtained by adding fixed no to preceding term such list of no. called______-
4. 11.this value of discriminant gives equal roots of quadratic equation____________-
6. 6.if 2 is a roots of a equation x2+ax+12=0 and quadratic equation x2+ax+q=0 has equal root then q=
7. 12.the__________ form of an A.P. is a,a+d,a+2d,a+3d.....
9. 2.quadratic formula is known as_____________
11. 16.tangent of circle insect at__________ point
15. 15.this line meets the circle in two point
16. 4.if equation has b2-4ac=0 is known as ___________ roots