Answer:
x = ±sqrt(7)
Step-by-step explanation:
3x^2 + 7 = 28
Subtract 7 from each side
3x^2 + 7-7 = 28-7
3x^2 = 21
Divide by 3
3x^2 /3 = 21/3
x^2 = 7
Take the square root of each side
sqrt(x^2) = ±sqrt(7)
It would be 5 and1/3.
Hope it helped( take out he i)
x = 9
so whats the answer?
