Question

Add : 3x+2y-5z, 2x-5y+2z b)Subtract: (x-y) from (x +y) 13Construct a ∆DEF such that DE = 5cm, DF = 3cm and ∟EDF = 90⁰ using compass and ruler only 14.Draw a line PQ. Take a point R outside it. Through R draw a line parallel to PQ using ruler and compass only. (4+3+3 =10)

Answer 1

Step-by-step explanation:

I hope it will help you write it

Answer 2

$1) \: 3x + 2y - 5z + 2x - 5y + 2z$

$= 7x - 3y - 3z$

$2) \: (x - y) - (x + y)$

$= x + y - x - y$

$= 0$