The answer in your case is B
Answer and work down below
Because there is 5 in both of the numbers:
5 and 0.5
The first one would be (2x)(7) and plus the other 75 it would be 738 with that in total of it c 5 3-15
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 .