Question
Write the product in the standard form. (0.4𝑥 + 1.2)2
Hint:
The methods used to find the product of binomials are called special products.
Multiplying a number by itself is often called squaring.
For example (x + 3)(x + 3) = (x + 3)2
The correct answer is: 1.44
(0.4x + 1.2)2 can be written as (
x + 
)2 which can be further written as (x + )(x + )
(x + )(x + ) = x(x + ) + (x + )
= x(x) + x() + (x) + ()
= 0.16x2 + 0.96x + 1.44
Final Answer:
Hence, the simplified value of (0.4𝑥 + 1.2)2 is 0.16x2 + 0.96x + 1.44.
x(x) + x() + (x) + ()Final Answer:
Hence, the simplified value of (0.4𝑥 + 1.2)2 is 0.16x2 + 0.96x + 1.44.
This question can be easily solved by using the formula
(a + b)2 = a2 + 2ab + b2
Related Questions to study
What is the area of the shaded region?
What is the area of the shaded region?
What is the total area of four white triangles if 𝑥 = 12 𝑐𝑚?
What is the total area of four white triangles if 𝑥 = 12 𝑐𝑚?
Describe the possible values of x.
Describe the possible values of x.
What expression represents the total area of the four white triangles?
What expression represents the total area of the four white triangles?
Write the product in the standard form. (𝑥2 − 2𝑦)(𝑥2 + 2𝑦)
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
Write the product in the standard form. (𝑥2 − 2𝑦)(𝑥2 + 2𝑦)
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
Write the product in the standard form. (𝑥 − 2.5)(𝑥 + 2.5)
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
Write the product in the standard form. (𝑥 − 2.5)(𝑥 + 2.5)
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
Describe the possible lengths of the third side of the triangle given the lengths of the other two sides.
5 inches, 12 inches
Describe the possible lengths of the third side of the triangle given the lengths of the other two sides.
5 inches, 12 inches
Write the product in the standard form. (3𝑎 − 4𝑏)(3𝑎 + 4𝑏)
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
Write the product in the standard form. (3𝑎 − 4𝑏)(3𝑎 + 4𝑏)
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
Write the product in the standard form. 
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
Write the product in the standard form.
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
How is it possible that the sum of two quadratic trinomials is a linear binomial?
How is it possible that the sum of two quadratic trinomials is a linear binomial?
If (3x-4) (5x+7) = 15x2-ax-28, so find the value of a?
If (3x-4) (5x+7) = 15x2-ax-28, so find the value of a?
The difference of x4+2x2-3x+7 and another polynomial is x3+x2+x-1. What is the
another polynomial?
The difference of x4+2x2-3x+7 and another polynomial is x3+x2+x-1. What is the
another polynomial?
Use the product of sum and difference to find 83 × 97.
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
Use the product of sum and difference to find 83 × 97.
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
Determine the gradient and y-intercept from the following equation: 4x + y = -10
Determine the gradient and y-intercept from the following equation: 4x + y = -10
Use the product of sum and difference to find 32 × 28.
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
Use the product of sum and difference to find 32 × 28.
This question can be easily solved by using the formula
(a + b)(a - b) = a2 - b2
