Select the correct answer from each drop-down menu. Consider the expression below.
(2 + 4) (3 + 9)
and
For (x + 4)(x+9) to equal o, either (x + 4) or (x + 9) must equal
The values of x that would result in the given expression being equal to 0, In order from least to greatest, are
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true. i hope this ! go answer some of my newest

x^2 + 81

we can factor this using difference of square binomials.

rewrite the equation:

x^2 - (-81)

factor:

(a^2 - b^2) = (√a^2 + √b^2)(√a^2 - √b^2)

(x^2 - (-81) = (x + √-81)(x - √-81)

we can remove the - from under the radical by multiplying it by i.

(x^2 - (-81) = (x + i√81)(x - i√81)

(x^2 - (-81) = (x + 9i)(x - 9i)

we can check our answer by using foil:

x^2 - 9ix + 9ix - 81i^2

x^2 - 81^2

i^2 = -1

x^2 + 81