Answer:
(-7, -10)

Step-by-step explanation:

Substitute x for -7.

Multiply 4 by -7.

Add 28 on both sides.

Divide -4 on both sides.

Answer:
the green kin quadrant IV
Step-by-step explanation:
i took the quiz and got it right
Answer:
Step-by-step explanation:
This equation looks complicated.We have to make it easier
let's say x^2/3 = t and x^4/3 = t^2
t^2-10t+21=0 [ we can factorize this equation as a (t-3)(t-7) ]
(t-3)(t-7)=0 [ that means , t can be 3 or 7 ]
But don't forget we have to find x not t so,
t=x^2/3=3 ∛ x^2 = 3 x^2 = 9 x=3 or x= -3
t=x^2/3=7 ∛x^2 = 7 x^2 = 343 x ~18.5 or x ~ -18.5
7/10 because you divide by 10
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