Answer:
<h2>c. x = -4 or x = 9</h2>
Step-by-step explanation:
Domain:
solution:
use <em>(a - b)(a + b) = a² - b²</em>
multiply both sides by (x - 3) ≠ 0
cancel (x - 3)
subtract from both sides
cross multiply
use FOIL
subtract 4x from both sides
combine like terms
change the signs
The product is 0 if one of the factors is 0. Therefore:
<em>add 9 to both sides</em>
<em>subtract 4 from both sides</em>
You would have to be 30 because multiples of 5 would only be 25 and 30 inbetween those numbers, and 25 is not an even number which it must be if you can say the number counting by 2s
Answer:
z= - 5
√
38
Step-by-step explanation:
take the root of both sides
or
you can factor each set and make them equal to zero
Answer:
n=9
Step-by-step explanation:
7n+5=68 Subtract 5 on both sides.
<u>-5 -5</u>
7n=63 Divide both sides by 7.
<u>/7 /7</u>
n=9
Hope this helps! Have a nice day ^^