supply the missing term
x² -? +49
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Step-by-step explanation:
To get the missing second term of a perfect trinomial equation, you need to find the square root of the third term.
The square root of 49 is -7 and 7, so which one we will choose? You need to look at the sign. The sign before the second term is negative so we will choose -7.
Then multiply it into 2 so...
-7×2=-14
So -14x is the second term.
Standard form: x²-14x+49=0