Answer:

Step-by-step explanation:

The common factor is 19

Answer:
She did not use the reciprocal of the divisor.
She added the numerators.
Answer: 544 ft²
Step-by-step explanation: 17*32=544 and ft*ft=ft² so it is 544 ft²
Answer:
-4 or 5
Step-by-step explanation:
let number be x
x²-x=20
Rearrange
x²-x-20=0
(x+4)(x-5)=0
Separate
x+4=0, x-5=0
x=-4 or 5