(5x-7)2 + 140x
= 25x2 - 70x + 14 + 140x
= 25x2 + 70x + 14
= (5x+7)2
5:4 You just put a Colen In the middle EDIT*THERE WOULD ACTUALLY BE A INFINITE AMOUNT OF ANSWER FOR EXAMPLE IT COULD BE 10:8 BECAUSE YOU MULTIPLY BY 2 SO EVERY TIME U DO DAT U HAVE MANY ANSWERS.
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Answer:
Step-by-step explanation:
108.8
102+119+103+114+106
/5
=
108.8
