Question

Use (a + b)² = a² + 2ab + b² to evaluate the following: (10.2)².​

Answer 1

Answer:

Using (a+b)

2

=a

2

+2ab+b

2

We can write (10.2)

2

=(10+0.2)

2

= (10)

2

+2(10)(0.2)+(0.2)

2

= 100+4+0.04

Hence the answer is 104.04