If x =1 , y =2 and z = 5 , find the value of a) 3x – 2y + 4z b) xy + yz – zx
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Step-by-step explanation:
take x=1 , y=2 , z=3 in given equation
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Answer:
a) 19
b) 7
Step-by-step explanation:
a) 3x-2y+4z
= 3*1-2*2+4*5
= 3-4+20
= 23-4
= 19
b) xy+yz-zx
=1*2+2*5-5*1
=2+10-5
=2+5
=7
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