Mathematics
Related Questions
Using (a - b)2 = (a2 + b2 - 2ab), evaluate:
(i) (97)2
(ii) (992)2
(iii) (9.98)2
Fill in the blanks to make the given expression a perfect square:
(i) 16a2 + 9b2 + …………..
(ii) 25a2 + 16b2 - …………..
(iii) 4a2 + 20ab + …………..
(iv) 9a2 - 24ab + …………..
If (a + b + c) = 15 and (ab + bc + ca) = 74, find the value of (a2 + b2 + c2).
If (a2 + b2 + c2) = 50 and (ab + bc + ca) = 47, find the value of (a + b + c).