Evaluate 60^2 − 42^2 using an arithmetic identity.
Note
Use a²−b²=(a−b)(a+b). Here (60−42)(60+42) = 1836.
Evaluate 60^2 − 42^2 using an arithmetic identity.
Use a²−b²=(a−b)(a+b). Here (60−42)(60+42) = 1836.