Use (a+b)2 = a2 + 2ab + b2 to evaluate the following:
(1003)2
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(1003)2 = (1000 + 3)2
Using (a + b)2 = a2 + 2ab + b2,
(1000 + 3)2 = (1000)2 + 2(1000)(3) + (3)2
= 1000000 + 6000 + 9 = 1006009
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If a2 + 4a + x = (a + 2)2, find the value of x
(101)2
(10.2)2
Use (a - b)2 = a2 - 2ab + b2 to evaluate the following:
(99)2