Question

If P = x + y + z and Q = 2x - y + 3z,find P + 2Q

Answer 1

5x-y+7z..........

P = x+y+z

&Q = 2x-y+3z → 2Q = 4x-2y+6z

∴P+2Q = (x+y+z)+(4x-2y+6z) = 5x-y+7z

#answerwithquality #BAL

Answer 2

P + 2Q = 5x - y + 7z

Given :

P = x + y + z and Q = 2x - y + 3z

To find :

The value of P + 2Q

Solution :

Step 1 of 2 :

Write down the given expressions

Here it is given that

P = x + y + z and Q = 2x - y + 3z

Step 2 of 2 :

Find the value of P + 2Q

$\sf P + 2Q$

$\sf = (x + y + z) + 2(2x - y + 3z)$

$\sf = x + y + z+ 4x -2 y + 6z$

$\sf = x + 4x + y -2 y + z+ 6z$

$\sf = 5x - y +7z$