Question

Find the value of below algebraic expressions when x = 3, y = - 1 and z = 2 (i) 4x2 – 4y2 + 6z2 (ii) 3xyz + 10x – 3yz

Answer 1

Answer:

use doubtnut app to solve solutions

Answer 2

Answer:

Step-by-step explanation:

given,

 x = 3 , y= -1 and z = 2

1. 4x2 - 4y2 + 6x2

= 4× 3×2 - 4×(-1)×2 + 6×2×2

= 24+ 8+ 24

= 56

2. 3xyz + 10x - 3yz

= 3×3×(-1)×2 + 10×3 - 3×(-1)×2

= -18 + 30 + 6

= 18