Evaluate Using Identity
\[ (0.98)^2 \]
Solution:
Using identity:
\[ (a-b)^2 = a^2 – 2ab + b^2 \]
\[ (0.98)^2 = (1-0.02)^2 \]
\[ = (1)^2 – 2(1)(0.02) + (0.02)^2 \]
\[ = 1 – 0.04 + 0.0004 \]
\[ = 0.9604 \]
\[ (0.98)^2 \]
Using identity:
\[ (a-b)^2 = a^2 – 2ab + b^2 \]
\[ (0.98)^2 = (1-0.02)^2 \]
\[ = (1)^2 – 2(1)(0.02) + (0.02)^2 \]
\[ = 1 – 0.04 + 0.0004 \]
\[ = 0.9604 \]