Question

7xy + 5yz - 3zx, 4yz + 9zx - 4y , -3x2 + 5x - 2xy.​

Answer 1

》Given :-

$\rm(7xy + 5yz - 3zx), (4yz + 9zx - 4y) , ({ - 3x}^{2} + 5x - 2xy)$

》To do :-

• Addition of (given) terms

》Solution :-

$\dag \: \: \: \: \: \: \sf \small{7xy + 5yz - 3zx + 4yz + 9zx - 4y + ( { - 3x}^{2} + 5x - 2xy)} \\ = > \small \sf7xy - 2xy+ 5yz +4yz - 3zx + 9zx - 4y + 5x +( { - 3x}^{2} ) \\ = > \underline{ \: \small \sf5xy + 9yz + 6xz - 4y + 5x - {3 {x}^{2} }^{} \: }$

Hence, Required Value of operation done above,

• $\sf5xy + 9yz + 6xz - 4y + 5x - {3 {x}^{2} }^{}$

Answer 2

Answer:

The solution is $5xy+9yz+3zx+5x-4y$

Step-by-step explanation:

Given:

   $7xy + 5yz - 3zx$     ____________ equation (1)

   $4yz + 9zx - 4y$       ____________ equation (2)

  $-3x2 + 5x - 2zx$     ____________ equation (3)

Solution:

     $(7xy + 5yz - 3zx)+(4yz + 9zx - 4y)+ (-3zx + 5x - 2xy)\\\\= 7xy + 5yz - 3zx+4yz + 9zx - 4y+-3zx + 5x - 2xy$

Now, bring the terms together which have same variables

$(7xy-2xy) +(5yz+4yz)+(-3zx+9zx-3zx)+5x-4y\\=5xy+9yz+3zx+5x-4y$

This is the solution