Answer:
x = ± 2
Step-by-step explanation:
Given
x² = 4 ( take the square root of both sides )
x = ±
= ± 2
Since 2 × 2 = 4 and - 2 × - 2 = 4
Answer:
4
Step-by-step explanation:
7(2m+3)-5m=2(4m+8)+9
14m+21-5m=8m+16+9
14m-5m-8m+21=16+9
9m-8m+21=25
m+21=25
m=25-21
m=4
Answer:
2. 5(b+3)
3. 5b + 15
4. 15 + 5b
Step-by-step explanation:
area of rectangle = length * breadth
length= b+3
breadth = 5
Step-by-step explanation:
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Answer:
1050
Step-by-step explanation:
Let x = full capacity

Move the variable to the left side by subtracting both sides by 


Combine the like terms (don't forget about common denominator)


Multiply both sides by
to isolate the x

