What is the product of 8.2 × 109 and 4.5 × 10-5 in scientific notation? 36.9 × 10-45
12.7 × 104
3.69 × 105
3.69 × 1014

answer: c

step-by-step explanation

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

i believe your answer is a

6

step-by-step explanation:

first you do 6 times 6 which gives u 36 then u do 36 divide my 6 which gives u 6. the u do the equation

6×6=36

36÷6=6