Question

evaluate 5.1x5.2 using algebraic identities

Answer 1

Answer:

(5+0.1)(5+0.2)

Now use the formula

(x+a)(x+b)

Step-by-step explanation:

Answer 2

Answer:

(5-0.1)(5+0.2)

5×5+5×0.2-0.1×5+0.1×0.2

25+1-5+0

26-5

=21