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Math

Postby Guest » Sun Jan 21, 2024 3:20 pm

Calculate:
74²-16+2•70.
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Re: Math

Postby Guest » Mon Jan 22, 2024 2:10 am

[tex]74^2-16+2\times 70 = 74^2-4^2+2\times 70 = (74-4)(74+4)+2\times 70 = 70\times78+2\times 70 = 70(78+2) = 70\times 80 = 5600[/tex]
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Re: Math

Postby mycalsuite » Wed Oct 01, 2025 10:47 am

74^2= 5476
5476-16= 5460
2.70= 140
5460-140=5600
final answer is 5600.

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