3. Binomial Formula: ( a + b ) ( a - b ) = a^2 - ab + ba - b^2 = a^2 - b^2
4x^2 - 25 = (2x - 5)(2x + 5)
C) r^2 + 1 because any number squared (positive or negative) will be positive
k/9-1=12
We move all terms to the left:
k/9-1-(12)=0
We add all the numbers together, and all the variables
k/9-13=0
We multiply all the terms by the denominator
k-13*9=0
We add all the numbers together, and all the variables
k-117=0
We move all terms containing k to the left, all other terms to the right
k=117
Answer:
Line B
Step-by-step explanation:
Answer:
The Subtraction equation use to find the age of his oldest relative is
.
Step-by-step explanation:
Given:
Age of youngest relative = 5 years
We need to write a subtraction equation that could be used to find the age of his oldest relative.
Solution:
Let the age of the oldest relative be 'x'.
Now given:
Age of youngest relative is 79 years less than the age of his oldest relative.
So we can say that;
Age of oldest relative minus 79 is equal to Age of the youngest relative.
framing in equation form we get;

Hence the Subtraction equation use to find the age of his oldest relative is
.