Answer:
(x+7)(x-7)
The factors are -7 and 7
Step-by-step explanation:
Given the function x²-49, to find the factors, we will factorise the expressed using the different of two square.
If a and b are two numbers, then based on difference of two square;
a²-b² = (a+b)(a-b)
Applying this to the function in question
x²-49
= x²-7²
= (x+7)(x-7)
The factors can be gotten by equating the function to zero according to factor theorem.
(x+7)(x-7) = 0
x+7 = 0 and x-7 = 0
x = -7 and 7
Answer:
720 has a comment says
Step-by-step explanation:
:)
Answer:
Set a proportion
Step-by-step explanation: Remember in your lesson it taught how to set up a proportion and then cross multiply
Answer:
k = 4
Step-by-step explanation:
Answer:
7/8 yards
Step-by-step explanation:
1 1/4- 3/8
first change 1 1/4 to an improper fraction: 5/4
next, find common denominator which is 8
5/4=10/8
10/8-3/8=7/8