Asked by Fading
Rewrite x^2+9 as a product using complex numbers and the polynomial identity below.
a. (x+3)(x-3)
b. (x+3i)(x-3i)
c. (3x)(3i)
d. (x+9i)(x-9i)
I'm not sure if it's b or d, if I'm on the right path. Please help? Thanks
a. (x+3)(x-3)
b. (x+3i)(x-3i)
c. (3x)(3i)
d. (x+9i)(x-9i)
I'm not sure if it's b or d, if I'm on the right path. Please help? Thanks
Answers
Answered by
Steve
9 = 3^2, so it's (b)
which you could have verified by actually doing the multiplication, guy.
which you could have verified by actually doing the multiplication, guy.
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