When -3 is squared it becomes 9 then -3x5 is -15 so put that back into the equation 9-15+9= 4
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Answer:
You greatest common factor is

Step-by-step explanation:
You need to find a number and letter which goes into both monomials.
,
Split both monomials up, into each integer and letter.
INTERGERS: 6, 3
LETTER t:
,
LETTER z: 
3 goes into 6 and 3.
goes into
and
.
Nothing goes into
and 0.
You greatest common factor is

Therefore

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