Write each subtraction equation as an addition equation. 1. a -9= 6
2. p - 20 = -30
3. 2 - (-12) = 15
4. X – (-7) = -10

9+6=?

-30+20=?

2+12=?

7x+-10=?

I'm not confident in the third one sryyy

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.

the answer is d on edge

step-by-step explanation: