Factor the expression. 3r2 – 75 (3r –5)(r + 5) (3r +5)(r – 5) 3(r – 5)(r + 5) 3(r – 5)(r – 5)

factor 3r^2-75

 you would move the 3 to the outside of the parenthesis

then you have 5*5 = 25 and multiply that by the 3 to get the 75

 3(r-5)(r+5)

1 x=22.52

2: 65/39=604+39x

65x-39x=604

26x=604

x=604/26

×=23.23