Given vectors u = -9i + 8j and v= 7i + 5j find 2u -6v in terms of unit vectors i and j

- 60i - 14j

Step-by-step explanation:

- 18i + 16j  - 42i - 30j = - 60i - 14j

x= -3 and

step-by-step explanation:

to find the roots of a cubic, use division or factoring to find the factors then set equal to 0. as this is a difference of cubes, it factors into

where a is the cube root of .

here   this is 27 and the cube root of 27 is 3. so we write using the form:

.

set each factor to 0 and solve for x.

x-3=0

x=3

the quadratic expression does not factor and must be solved using the quadratic formula.

where a = 1, b=3, and c=9

this cubic has two complex roots.

answer: i literally just answered this question but they want me to do it again

step-by-step explanation: