Question

Class 7 .. maths simple ..
1. Add (4x+5xy+6x²y) and (2x-3xy+2x²y)
2. Subtract (4y²+6x²+3x) from (5x²+9y²+5x)
please solve no Hardwork simple .. please help me .. don't incomplete or Inappropriete answers ..

Answer 1

αnswers :-

~Here, in the first and second question we just need to solve by combining the like terms of each expression.  

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1. To  Add

• (4x+5xy+6x²y)  and  (2x-3xy+2x²y)

$\sf \implies ( 4x+5xy+6x^{2}y ) + ( 2x -3xy + 2x^{2}y )$  

$\sf \implies 4x + 5xy + 6x^{2}y + 2x -3xy + 2x^{2}y$  

$\sf \implies 4x+2x + 5xy-3xy + 6x^{2}y + 2x^{2}y$

$\sf \implies 6x + 2xy + 8x^{2}y$

$\boxed{\sf{ \star \;\; 6x + 2xy + 8x^{2}y }}$

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2. To Subtract  

(4y²+6x²+3x) from (5x²+9y²+5x)

$\sf \implies ( 5x^{2} + 9y^{2} + 5x ) -( 4y^{2} + 6x^{2} + 3x )$ 

$\sf \maltese \;\; \bigg\{ arithematic\;symbols\;will\;change\;here\;because \\ there\;is\;a \; (-) \; symbol\;before\;the\;bracket \bigg\}$

 

$\sf \implies 5x^{2} + 9y^{2} + 5x -4y^{2} -6x^{2} -3x$

$\sf \implies 5x^{2} -6x^{2} + 9y^{2} -4y^{2} + 5x-3x$ 

$\sf \implies -x^{2} + 5y^{2} + 2x$  

$\boxed{\sf{ \star \;\; -x^{2} + 5y^{2} + 2x }}$

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