Answer:
x = - 
- 
/ 2 or
x= - 13/2 + / 2
Step-by-step explanation:
1- Substitute and calculate
if you don't want to give me brainlist its okay I don't mind I just like helping people with their problems
So you want to start to factor so you get (x²+2)(x²-7) = 0. Now set each () to 0, so you get (x²+2) = 0 and (x²-7)=0. The first ends with +√2i and -√2i, the second ends with +√7 and -√7
Step-by-step explanation:
The coefficients are 4, 5 and 7
There is no constant
The second one is right
The first step we take is to factor out a GCF:
2d(d³ + 3d² - 9d - 27)
Now, we can factor what's in the parenthesis by grouping (don't forget to keep the 2d we factored out):
2d[d²(d+3) -9(d+3)]
2d(d²-9)(d+3)
d²-9 can still be factored because it is the difference of two squares:
2d(d+9)(d-9)(d+3)
That is the completely factored form.
