Answer:
Step-by-step explanation:
by idetity : (a - b)²= a² +b² -2ab
for : (x² - 5)² you have a = x² and b = 5
(x² - 5)²= (x²)²+5² - 2(5)(x²)
(x² - 5)²= x^4+25 -10x²
Answer:
Step-by-step explanation:
Answer:
She can be a member for 8 months
Step-by-step explanation:
Let x be the number of months
30 + 10.5(x) = 114
30 + 10.5x = 114
10.5x = 114-30
10.5x = 84
x = 84/10.5
x = 8 mints
<u><em>Answer: Addition property of equality, Subtraction property of equality, Multiplication property of equality, and Division property of equality.</em></u>
Step-by-step explanation:
Addition property of equality is adding the same number to both sides of an equation does not change the equation.
a+c=b+c
Example: t-6=13
add 6 both sides of an equation.
t-6+6=13+6
answer: t=19
________________________________________________________
Subtraction property of equality is subtracting the same number from both sides of an equation does not change the equation.
a-c=b-c
11=x+5
switch sides of equation
x+5=11
subtract by 5 both sides of an equation.
x+5-5=11=5
answer: x=6
___________________________________________________________
Multiplication property of equality is multiplying both sides of an equation by the same number does not change the equation.
a*c=b*c
t/5=3
example:
5/1*t/5=3*5
then multiply on the right side.
t=3*5
answer: t=15
______________________________________________________
Division property of equality is dividing both sides of an equation by the same non-zero number does not change the equation.
a/c=b/c for c≠0
10a/10=130/10
divide by 10 both sides of an equation.
10a/10=130/10
simplify.
130/10=13
answer: a=13
_____________________________________________
Hope this helps!
Thanks!
