Maths-
General
Easy
Question
Simplify: (x + y)(2x + y) + (x + 2y)(x – y)
Hint:
- Multiplication of polynomials.
- Follow three steps while multiplication of polynomials.
First, multiply each term in one polynomial by each term in the other polynomial using the distributive law.
Add the powers of the same variables using the exponent rule.
Then, simplify the resulting polynomial by adding or subtracting the like term
The correct answer is: 3x2 - y2 + 4xy
- Step-by-step explanation:
○ Given:
(x + y)(2x + y) + (x + 2y)(x – y)
○ Step 1:
(x + y)(2x + y) + (x + 2y)(x – y)
x(2x + y) + y(2x + y) + x(x - y) + 2y(x - y)
2x2 + xy + 2xy + y2. + x2 - xy + 2xy - 2y2 .
○ Step 2:
○ Group like terms:
2x2 + x2 + y2.- 2y2 - xy + 2xy + xy + 2xy
3x2 - y2 + 4xy
- Final Answer:
3x2 - y2 + 4xy
○ Step 1:
○ Step 2:
○ Group like terms:
Related Questions to study
Maths-
Is it possible to construct a triangle with the given side lengths? If not, explain why not.
3, 6, 9
Is it possible to construct a triangle with the given side lengths? If not, explain why not.
3, 6, 9
Maths-General
Maths-
Is it possible to construct a triangle with the given side lengths? If not, explain why not.
35, 120, 125
Is it possible to construct a triangle with the given side lengths? If not, explain why not.
35, 120, 125
Maths-General
Maths-
Is it possible to construct a triangle with the given side lengths? If not, explain why not 28, 34, 39
Is it possible to construct a triangle with the given side lengths? If not, explain why not 28, 34, 39
Maths-General
Maths-
Simplify the expression 4yx + 2yx - 28yx + 3yx
Simplify the expression 4yx + 2yx - 28yx + 3yx
Maths-General
Maths-
Is it possible to construct a triangle with the given side lengths? If not, explain why not.
6, 7, 11
Is it possible to construct a triangle with the given side lengths? If not, explain why not.
6, 7, 11
Maths-General
Maths-
Factor out the GCF from the given polynomial.
Factor out the GCF from the given polynomial.
Maths-General
Maths-
Sketch and label the triangle described.
Side lengths: about 3 m, 7 m, and 9 m, with longest side on the bottom
Angle measures: 16°, 41°, 123°, with smallest angle at the left
Sketch and label the triangle described.
Side lengths: about 3 m, 7 m, and 9 m, with longest side on the bottom
Angle measures: 16°, 41°, 123°, with smallest angle at the left
Maths-General
Maths-
In △ 𝑅𝑆𝑇, which is a possible side length for ST?
In △ 𝑅𝑆𝑇, which is a possible side length for ST?
Maths-General
Maths-
Write a trinomial that has a GCF of 4x2
Write a trinomial that has a GCF of 4x2
Maths-General
Maths-
If P = 4x2 - 5x + 2, Q = 4x2 + 3x - 4 and R = 2x2 - 5x - 5, find the value of 2P - Q + R
If P = 4x2 - 5x + 2, Q = 4x2 + 3x - 4 and R = 2x2 - 5x - 5, find the value of 2P - Q + R
Maths-General
Maths-
The areas of rectangles are given. Use factoring to find the expressions for the missing dimensions.
The areas of rectangles are given. Use factoring to find the expressions for the missing dimensions.
Maths-General
Maths-
The area of a rectangle is given. Use factoring to find the expressions for the missing dimensions.
The area of a rectangle is given. Use factoring to find the expressions for the missing dimensions.
Maths-General
Maths-
Add: 5x2 - 8xy + 3y2, 4x2 + 3xy + 7y2, 3x2 - 11xy - 8y2
Add: 5x2 - 8xy + 3y2, 4x2 + 3xy + 7y2, 3x2 - 11xy - 8y2
Maths-General
Maths-
Use a ruler and protractor to draw an obtuse isosceles triangle. Mark the largest angle and longest side in red and the smallest angle and shortest side in blue. What do you notice?
Use a ruler and protractor to draw an obtuse isosceles triangle. Mark the largest angle and longest side in red and the smallest angle and shortest side in blue. What do you notice?
Maths-General
Maths-
The area of a rectangle is given. Use factoring to find the expressions for the missing dimensions.
The area of a rectangle is given. Use factoring to find the expressions for the missing dimensions.
Maths-General