Math, asked by sidhu4717, 8 months ago

Add 7x²- 4 xy + 8 y², 3 xy + 4x² +3y²and -3 x ² + 6xy -7y²

Answers

Answered by Anonymous
3

Question :

Add 7x²- 4 xy + 8 y², 3 xy + 4x² +3y²and -3 x ² + 6xy -7y²

Answer :

Add :

7x^2 - 4xy + 8y^2

4x^2 + 3xy + 3y^2

-3x^2 + 6xy - 7y^2

_____________________

\bold{8x^2 + 5xy + 4y^2}

_____________________

Explanation :

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First terms = Add ( 7x^2 + 4x^2 + ( -3x^2))

(( 7 + 4 ) x^2 ) + ( -3x^2)

11x^2 + ( -3x^2)

\boxed{(+)×(-)=(-)}

(( 11 - 3 ) x^2)

\bold8x^2

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Second term = Add ( -4xy + 3xy + 6xy )

\boxed{(-)×(+)=(-)}

(( 3 - 4 ) xy ) + ( 6xy)

( -1 xy ) + ( 6xy)

\boxed{(-)×(+)=(-)}

( 6 - 1 xy )

\bold{5xy}

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Third term = Add ( 8y^2 + 3y^2 + ( -7y^2 ))

(( 8 + 3 ) y^2 ) + ( -7y^2)

( 11 y^2 ) + ( -7 y^2 )

\boxed{(+)×(-)=(-)}

(( 11 - 7 ) y^2 )

\bold{3 y^2}

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\bold\pink{8x^2 + 5xy + 4y^2}

So, It's Done !!

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