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