Math, asked by riya2717, 1 month ago

please answer this if u are good in math​

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Answered by MindLord
3

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Answered by BrainlyArnab
3

iv)

b)

note :-

49 = ±7²

=> 49 = (-7)²

&

-343 = (-7)³

viii)

 \bf3x  -  \{x - (4x + 3y) + 5y \} \\  \\  \bf =  > 3x -  \{x - 4x - 3y + 5y \} \\  \\  \bf =  >  3x -  \{ - 3x + 2y \} \\  \\  \bf =  > 3x + 3x - 2y \\  \\  \bf =  >   \underline \red{6x - 2y}

Hence,

Simplification is 6x - 2y.

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