Answer:
Final answer is 
.
Step-by-step explanation:
Given expression is 
.
Now we need to find about what value for c will make the given expression , a perfect square trinominal.
Coefficient of middle term that contains x, in -7.
Take half of that so we get 
.
Then take square of the half value.
We get 
.
We add the square value to make perfect square trinomial.
Hence final answer is .
27 is very hard to see
28: 0.4=10
4/10=10
10/4 times 10 is 25
There are 25 students in the class
C=480
solve
480=24n+35
minus 35 both sides
445=24n
divide both sides by 24
18.541666666666666666666666666667=n
<span>so about 18 cakes</span>
Answer:
<h2>4 x 3 = 1200</h2>
Step-by-step explanation
there is a square and it has 4 sides and if each are 300 you have to multiply but remember to put the 2 zeros cause 300 has 2 zeros
Step-by-step explanation:
(2a+3b)(4a²-6ab+9b²
(2a+3b){(2a)²-2a×3b+(3b)²}
Because (a³+b³)=(a+b)(a²-ab+b²)
Therefore,
(2a+3b){(2a)²-2a×3b+(3b)²}
=(2a)³+(3b)³
By substituting the values , we get
- (2a)³+(3b)³
- (2×3)³+(3×(-5))³
- 6³+(-15)³
- 216+(-3375)
- 216-3375
- -3159
