Choose one of the factors of x3 − 1331

x-11 (i'm pretty sure its this one but i'm just checking)

x2-11x+121

x2+22x+121

none of the above

Use formula for difference of perfect cubes:

Consider expression You know that then

The quadratic trinomial cannot be factored anymore, so the expression has two factors and  

correct choice is A.

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1