Do you remember the special case of factoring the difference of 2 squares ?
x² - 5 = (x + √5) (x - √5)
That will be zero if either factor is zero.
First factor:
x + √5 = 0
<u>x = -√5</u>
Second factor:
x - √5 = 0
<u>x = √5</u>
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Another way to look at it is just to sit there and LOOK at it.
<u>x² - 5 = 0</u>
x² = 5
This is true if x = + or - √5 .
The given expression is
It can be written as [ we can add or subtract the same thing]
The expression can be factored as difference of two squares
The common factor of the two terms is 16
WE can take 16 as common factor:
=
Options 1 ,3,4 are the equivalent expressions.
False, because there is not enough information to prove that it is true
hope this helps
Answer:
20 candles
Step-by-step explanation: