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Mathematics 19 Online
OpenStudy (anonymous):

Help me please

OpenStudy (anonymous):

Which shows 542 − 462 being evaluated using the difference of squares method

OpenStudy (anonymous):

the choices?

OpenStudy (anonymous):

542 − 462 = (2916 + 2116)(2916 − 2116) = 4,025,600 542 − 462 = (54 + 46)(54 − 46) = (100)(8) = 800 542 − 462 = 2916 − 2116 = 800 542 − 462 = (54 − 46)2 = 82 = 64

OpenStudy (igreen):

I'm guessing that's \(\sf 54^2 - 46^2\), right?

OpenStudy (anonymous):

i dont know thats what i thought..but idk >.<

OpenStudy (igreen):

Use the rule: \(\sf a^2 - b^2 = (a + b)(a - b)\)

OpenStudy (anonymous):

okay thanks

OpenStudy (igreen):

Yeah, just see which option uses that method and you have your answer.

OpenStudy (anonymous):

okay thanks!! :)

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