find the value of x
9x=(124)^ 2 - (56)^ 2
(using identity)
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9x=(124+56)(124-56)
9x = 180 ×68
x= 180×68
.....................
9
x=20×68
x=1360
i hope it will help u
and identity which is use here is a^2-b^2 =(a+b)(a-b)
9x = 180 ×68
x= 180×68
.....................
9
x=20×68
x=1360
i hope it will help u
and identity which is use here is a^2-b^2 =(a+b)(a-b)
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