Mathematics, 09.02.2021 17:10, JN02

Describe and correct the error in simplifying the expression (1+2i)(4-i)
=4-1+8i-2i^2
=-2i^2+7i+4

Answers: 3

Show answers

Other questions on the subject: Mathematics

Mathematics, 21.06.2019 20:00, kait93

Elizabeth is using a sample to study american alligators. she plots the lengths of their tails against their total lengths to find the relationship between the two attributes. which point is an outlier in this data set?

Answers: 1

continue

Mathematics, 21.06.2019 20:20, studyowl9192

Elena is paid a constant rate for each hour she works. the table shows the amounts of money that elena earned for various amounts of time that she worked.

Answers: 2

continue

Mathematics, 21.06.2019 20:30, aprilwilson3p8711m

For the quadratic function [tex]y=(x+4)^2-1[/tex] , do the following: a) rewrite the function in the standard form, b) rewrite the function in intercept form, c) find the vertex, d) find the y-intercept, e) find the x-intercepts.

Answers: 1

continue

Mathematics, 21.06.2019 21:00, lizzoone

The? half-life of a radioactive substance is 20 years. if you start with some amount of this? substance, what fraction will remain in 120 ? years

Answers: 1

continue

Do you know the correct answer?

Describe and correct the error in simplifying the expression (1+2i)(4-i)
=4-1+8i-2i^2
=...