If x = 5, y = 3 and z = -8, find the value of:
a.x3+ y3+ z3- 3xyz
b. 3xyz
c. (x - 4) (y - 3) (z+ 4)
d. (x - y)(y – z) (z- x)
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Answer:
a.312 b.360 c.0 d.286
Step-by-step explanation:
A= (5×3)+(3×3)+(-8×3)-(3×5×3×-8)
=24+(-336)
=312.
B=3×5×3×-8
=-360
C=(5-4)(3-3)(-8+4)
=1×0×4
=0
D.(5-3)(3-8)(-8-5)=
=22×13
=286
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