Question

If x= 2 and Y= (-1 ) , evaluate of 3x²-2xy+5

a)25
b)34
c)21
d)30


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Answer 1

Answer:

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Answer 2

Answer:

x=2

y=-1

$3x^2-2xy+5\\=3*(2)^2-2*2*-1+5\\=3*4+4+5\\=12+4+5\\=21$

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