Given two terms a, b.
Sum of terms = a+b
Difference of terms = a-b
Product of sum and difference (do not forget parentheses)
=(a+b)(a-b)
which can be expanded as=a^2-b^2
We can make use of this property to calculate with lightning speed, assuming you know the squares of numbers.
For example,
8*6=(7+1)(7-1)=7^2-1^2=48
9*7=(8+1(8-1)=8^2-1^2=64-1=63
5*15 = (10+5)(10-5)=10^2-5^2=75
22*18=(20+2)(20-2)=20^2-2^2=400-4=396
63*57=(60+3)(60-3)=60^2-3^2=3600-9=3591
128*112=(120+8)(120-8)=120^2-8^2=14400-64=14336
We can go on and on!
factor took out was 
, And resultant expression is 
.
<u>Step-by-step explanation:</u>
Here we need to Take a factor out of the square root: sqrt(3y^2) , where y<0 .Let's do this :
The given expression is sqrt(3y^2) or , 
We know that , to take out a factor out of the square root that factor must have a degree in multiple of 2 , as 
etc . So ,
⇒ 
⇒ 
⇒ 
⇒ 
⇒
Therefore , factor took out was , And resultant expression is .
It is b
xX HOPE IT HELP Xx
We start with 12/20. Half both numbers = 6/10. Half again = 3/5.
Because 3/5 are both odd numbers and can't be made smaller without using decimals (which you don't want to use within a fraction), 3/5 is the simplest form for this fraction.
Answer:
y=1/3x-2
Step-by-step explanation:
Now first we have to find a pattern in this.
for x_1 we notice that there is a difference of 3. For x_2 we notice that there is a difference of 1.
For graphs I suggest you use desmos . com/calculator ;)
Thanks for the points
