Question

Using identies
evaluate (102)²​

Answer 1

you can write (102) whole square as

${(100 + 2)}^{2}$

by inserting the formula

${(a + b)}^{2}$

which is

${a }^{2} + {b}^{2} + 2(ab)$

${100}^{2} + {2}^{2} + 2(100)(2)$

so

10004+400=10404

so the answer is=10404