· If x=3, y=-2 and z=4, find the value of
(a) 5x – 2xy
(b) x + xy +z
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Answer:
a 5*3 - 2*3*-2 = 15 + 12 = 27
b 3+3*-2+4= 3 - 6 + 4 =7 - 6 = 1
Step-by-step explanation:
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