Question

which the of the following
has -3 as zero?
a) (x²-3x)
b) (x²+3)
c )(x-3)
d) x²-9​

Answer 1

Answer:

put x=-3...

• (-3)^2-3(-3)≠0
• 3^2+3≠0
• -3-3≠0
• (-3)^2-9=0

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