Q7 of 111 Page 5

Write the value of: 253–753+503.

We have,


=


Let a = 25 , b = -75 , c = 50 ,


Then the expression becomes as ,


=


=


Here ,


Hence,


=


=


=


=


=


More from this chapter

All 111 →
5

If a + b + c = 9 and ab + bc + ca = 40, find a2 + b2 + c2.

 6

If a2 + b2 + c2 = 250 and ab + bc + ca = 3, find a + b + c.

 8

Write the value of: 483–303-183.

 9

Write the value of: