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babymother [125]
4 years ago
12

Evaluate (491) square in the form of (a-b) square

Mathematics
1 answer:
Tomtit [17]4 years ago
6 0

Step-by-step explanation:

(491)^{2}  \\  \\  = (500 - 9)^{2}  \\  \\  = ( {500})^{2}  - 2 \times 500 \times 9 + ( {9})^{2}  \\  \\  = 250000 - 9000 + 81 \\  \\  = 16000 + 81 \\  \\  = 16081 \\  \\    \huge\purple{ \boxed{\therefore (491)^{2}= 16081}}

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