Question

Evaluate (0.3)×(0.3)-(0.2)×(0.2) and write the answer in fraction

Answer 1

Answer:

(0.3)×(0.3)-(0.2)×(0.2) = 1/20

Step-by-step explanation:

Value of (0.3)×(0.3)-(0.2)×(0.2)

= (0.3)²-(0.2)²

= (0.3+0.2)(0.3-0.2)

/* By algebraic identity:

(x+y)(x-y) = x² - y² */

= 0.5 × 0.1

= 0.05

= 5/100

= 1/20

Therefore,

(0.3)×(0.3)-(0.2)×(0.2) = 1/20

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Answer 2

3/10 × 3/10 – 2/10 × 2/10, 9/100 – 4/,100 5/100, 1/10020 .Answer is 1/20.