Chad was asked whether the following equation is an identity:
(3x + 2y)2 = (3x + 2y)(3x – 2y)...
Mathematics, 18.02.2020 08:31 lily3937
Chad was asked whether the following equation is an identity:
(3x + 2y)2 = (3x + 2y)(3x – 2y) + 2(2y)?
He performed the following steps:
(3x + 2y)?
Step 1, = 9x2 + 4y?
Step2 = 9.? + 4y? + 4y? – 4y?
Step3
= (9x² – 4y?) + 8y?
Stept
= (3x + 2y)(3x – 2y) + 2(2y)?
For this reason, Chad stated that the equation is a true identity.
Is Chad correct? If not, in which step did he make a mistake?
Answers: 1
Another question on Mathematics
Mathematics, 21.06.2019 15:30
What is the volume of a rectangular prism that is 120 centimeters by 2 meters by 1.5 meters in cubic meters?
Answers: 1
Mathematics, 22.06.2019 00:30
A)a square brown tarp has a square green patch green in the corner the side length of the tarp is (x + 8) and the side length of the patch is x what is the area of the brown part of the tarpb)a square red placemat has a gold square in the corner the side length of the gold square is (x - 2) inches with the width of the red region is 4 in what is the area of the red part of the placemat
Answers: 2
Mathematics, 22.06.2019 00:30
Three friends are comparing the prices of various packages of golf balls at a sporting goods store. hector finds a package of 6 golf balls that costs $4.50.
Answers: 3
Mathematics, 22.06.2019 00:50
Asource of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b and c, as shown below: what is the distance between the walls?
Answers: 2
You know the right answer?
Questions
Mathematics, 31.01.2020 22:01
Geography, 31.01.2020 22:01
Mathematics, 31.01.2020 22:01
English, 31.01.2020 22:01
Social Studies, 31.01.2020 22:01
Chemistry, 31.01.2020 22:01
Mathematics, 31.01.2020 22:01
English, 31.01.2020 22:01
