Si. Use the formula (a + b + c)2 = a² + b2 + c2 + 2ab
+ 2bc + 2ac to find the square of the following
numbers.
(a) 100 + 30 + 8
(b) 4x + 5y + z, where x = 100, y = 10 and z = 1
(c) 100x + 10y + z, where x = 9, y = 3 and z = 5.
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100×Sin÷cos is the crt answers i don't know but am not sure
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