• Expand (2a + b)²:
(2a + b)²
= (2a + b) · (2a + b)
Multiply out the brackets by applying the distributive property of multiplication:
= (2a + b) · 2a + (2a + b) · b
= 2a · 2a + b · 2a + 2a · b + b · b
= 2²a² + 2ab + 2ab + b²
Now, group like terms together, and you get
= 2²a² + 4ab + b²
= 4a² + 4ab + b² <——— expanded form (this is the answer).
I hope this helps. =)
Tags: <em>special product square of a sum algebra</em>
Answer:
The area of the larger is 36 units^2
Step-by-step explanation:
The scale factor is 6/3 = 2
When we work with areas, it is scale factor squared
scale factor ^2 = area of larger / area of smaller
2^2 = area of larger / 9
4 =area of larger / 9
Multiply each side by 9
4*9 = 36
The area of the larger is 36 units^2
13.) 17/20
14.) 11/100
3
16.) 4—
10
17.) 31/4
3
19.) -1–
50
20.) 38
3
22.). -5—
5
3
23.). 1—
25
I don’t know the other ones. Sorry.
Answer:
Step-by-step explanation:
From the question we are told that
Dimension of drawing
20 centimetres by 10 centimetres
Scale of drawing
1 cm:250 cm
Generally the the Main dimension of the pool is mathematically given as
Therefore Area Aof main pool is mathematically given as
Answer: 604,375 = <u>600,000</u> + 4000 + 300 + <u>70</u> + 5.
Step-by-step explanation: I believe what's tripping you up is the fact that there are 6 digits in the number 604,375, and there are only 5 numbers to write out the actual number in equation form. The number in between 6 and 4 doesn't count, because if you write it out, it makes 00,000, so there's no point in adding 00,000 when it won't change the equation if you add it.
The question is asking to split the number and write out the digits from the greatest to the least amount of digits. For example, we're given 4,000, 300, and 5, which each are part of the number 604,375. 600,000 is the answer to the first blank and the blank between 300 and 5 is 70.
Let me know if this is right! :)
