Revision Test 01

   Mathematics 

Class:-IX                       Polynomial/Herons Formula 

                                             

1.Degree of polynomial y+y²+4 is________                                                               

a             a)      1                                  b) 2                  c)3                      d)4

2.If the area of an equilateral triangle is 16√3 cm² .Then find its side. 

                       

3.Find the value of k if x=4 is a zero of polynomial 2x³-3x²-18x+k    

                        

4.Find the area of triangle with sides 35 cm, 54 cm and 61 cm. 

                              

5.Factorize x³+13x²+32x+20      

                                                                                  

6.If x+y+z=1, xyz=-1 and xy+yz+zx=-1 find value of x³+y³+z³   

                                                                          

7.The sides of a quadrilateral ABCD taken in order are 5,12,14 and 15 m and the

 angles formed by the first two sides is a right angle .Find its area