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Mathematics 7 Online
OpenStudy (anonymous):

????

OpenStudy (anonymous):

what iz it ?

OpenStudy (anonymous):

???????

OpenStudy (anonymous):

(\[(7+\sqrt{2})(8-3\sqrt{2})\]

myininaya (myininaya):

\[7(8-3 \sqrt{2})+\sqrt{2}(8-3 \sqrt{2})\]

OpenStudy (anonymous):

whats the radical expresssion

myininaya (myininaya):

\[7(8)+7(-3 \sqrt{2})+\sqrt{2}(8)+\sqrt{2}(-3 \sqrt{2})\]

myininaya (myininaya):

multiply and combine like terms and then tell me what you have

OpenStudy (anonymous):

it dont come up to be any of my answers i think im doing something wrong

myininaya (myininaya):

\[56-21 \sqrt{2}+8 \sqrt{2} -3(2)\]

myininaya (myininaya):

\[56-21 \sqrt{2}+8 \sqrt{2}-6\]

myininaya (myininaya):

\[56-6-21 \sqrt{2}+8 \sqrt{2}=50-13 \sqrt{2}\]

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