How do you factor x2 4x-80?

What is digging tool with spade like blade? What do you divide to find voltage? Ho many centimetre are in 6 foot? Which numbers are relatively prime 13 and 39 or 48 and 49 or 54 and 99 or21 and 49? What 4 numbers multiply to make 99? What is 21 times 34? How many shapes an faces does a cube have? What is the factorization of this trinomial x3 - 12x2 plus 35x? How do you write 2015 in roman numerals? What is the square root of seven? How many edges does a tube have? Does conditional statement consists of counter example? What is the property of 3x plus 5y plus 5y plus 3x? What is 23 divided by 19? What is Z in Roman numerals? When p value is less than the t value do I need to reject the null? What is 6billion divided by 584million? What all did Aryabhatta invent? What is the purpose of 'range' in data handling? What is 3x - 2 equals x plus 8?