Question

If p = 3x + 5y + 4z, q = 4x - 8y - 2z and r = 2x – y + 3z
Then find 4p – 2q + r

Answer 1

4p-2q+r= 4(3x+5y+4z)-2(4x-8y-2z)+(2x-y+3z)

= 12x+20y+16z-8x+16y+4z+2x-y+3z

= 12x-8x+2x+20y+16y-y+16z+4z+3z

= 6x+31y+23z

SO THE ANSWERS IS 6x+31y+23z

PLEASE MARK THIS ANSWER AS BRAINLIEST

Answer 2

p=3x+5y+4z

q=4x-8y-2z

r=2x-y+3x

4p=12x+20y+16z

2q=8x-16y-4z

we have to find

4p-2q+r

(12x+20y+16z)-(8x-16y-4z)+(2x-y+3z)

(12-8+2)x+(20+16-1)y+(16+4+3)z

8x+35y+23z