Question

Find the square of 102 without multiplication ? with explanation​

Answer 1

Answer:10404

Step-by-step explanation:

We know a formula,

                                      ( a + b )² = a² + b² + 2ab

Now let's make use of this formula to find out the value of (102)² without actual multiplication.

As, 102 = 100 + 2,

                               (100 + 2)² = 100² + 2² + 2 (100) (2)

                                                = 10000 + 4 + 400

                                                = 10404

∴ (102)² = 10404.

Hope my answer helps you..

Answer 2

Answer:

(100+2)२=10000+4+2*100*2

10404