Evaluate using suitable identity:
c). 98²

Step-by-step explanation:
[tex]\sf \longmapsto 98^2[/tex]
[tex]\sf \longmapsto (a - b)^2 = a^2 - 2ab + b^2[/tex]
Here,
[tex]\sf \longmapsto (100 - 2)^2 = 100^2 - 2(100)(2) + 2^2[/tex]
[tex]\sf \longmapsto 100^2 - 2(100)(2) + 2^2[/tex]
[tex]\sf \longmapsto 10000 - 400 + 4[/tex]
[tex]\sf \longmapsto 9606[/tex]