Guys, Please Help. Can anyone copy-paste this? I need this quick plz. I will give brainliest. \left(\frac{4-3.5\cdot \left(2\:\frac{1}{7}-1\:\frac{1}{5} \right)}{x}\right)=\frac{3\:\frac{2 }{7}-\frac{3}{14}\div \frac{1}{16}}{41\:\frac{23}{84}-40\ :\frac{49}{60}}

y= -2x+4, have a great day

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