Question

Attempt all questions. (Use of calculator is allowed.)
Note: x^2 means x square
1) If a + b = 5 . a - b = 7 then find the value of a 2 - b^2
. Add file
2) A man runs diagonally across from one corner of a rec
60 m to the opposite corner in a straight line. Find the dig
complete the run what is answers​

Answer 1

1) a²-b²=(a+b)(a-b)

a²-b²=5×7 =35

2) is it proper question ??

I don't understand it . Write it clearly.

Okk

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