Question

find the value of: 6.7 whole thing square minus 3.3 whole thing square by 6.7-3.3
$(6.7) {}^{2} - (3.3) {}^{2} \\ 6.7 - 3.3$
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Answer 1

Answer:

11

Step-by-step explanation:

let ,

6.7=a

3.3=b.....{only for making it easy to write}

we get => { a²-b² } ÷ (a-b)

=> { (a+b)(a-b) } ÷ (a-b).....{ using identity, a²-b² = (a+b)(a-b)

=> a+b

=> 6.7 + 3.3

=> 11