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soldier1979 [14.2K]
2 years ago
13

A square has sides of length (2 a-b) metres. Write down an expression for the area of the square and simplify it​

Mathematics
1 answer:
Lorico [155]2 years ago
7 0

Answer:

A = 4a² - 4ab + b²

Step-by-step explanation:

The area (A) of a square is calculated as

A = s² ( s is the side length ) , so

A = (2a - b)² ← expand using FOIL

   = (2a)² - 2ab - 2ab + (- b)²

   = 4a² - 4ab + b²

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navik [9.2K]

Answer:

Luis spent $10 in total

2×2=4 6×1=6 6+4=10

Step-by-step explanation:

4 0
3 years ago
URGENT: I need to know the answer to this equation and the step by steps:
4vir4ik [10]

Answer:

1) 4-(-6) = 10

2) -10.3-(-7.79)= -2.51

3) -4+6 1/2= 2 1/2

4) -10.2+4.38= 5.82

5)

Step-by-step explanation:

1) A double - equals positive so change to

4+6=10

2) adding positive to negative makes it less negative

3) just change positions -4 from 6 1/2

4) makes it less negative

5) sorry I hat fractions can't do it

4 0
3 years ago
Solution to this equation -2 = t3
klio [65]

Answer:

Step-by-step explanation:

to find out t, we divide by 3 both sides

-2/3=t

t=-2/3

6 0
2 years ago
For a pair of similar triangles, corresponding sides are always congruent.<br> True or false?
baherus [9]

That's false. 
For similar triangles, corresponding angles are congruent.
Corresponding sides are in the same ratio but rarely congruent.
(They're congruent only if the ratio is ' 1 ', i.e. the triangles are congruent
as well as being similar.)


6 0
3 years ago
Read 2 more answers
Simplify your answer and write it as a proper fra<br> as a whole or mixed number.<br> -7+ – 2 = ?
ZanzabumX [31]

the answer is -9

      hope it helps

4 0
3 years ago
Read 2 more answers
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