Answer:
v ≈ - 5.29, v ≈ 5.29
Step-by-step explanation:
Given
3v² - 84 = 0 ( add 84 to both sides )
3v² = 84 ( divide both sides by 3 )
v² = 28 ( take the square root of both sides )
v = ± [tex]\sqrt{28}[/tex]
Thus
v = - [tex]\sqrt{28}[/tex] ≈ - 5.29
v = [tex]\sqrt{28}[/tex] ≈ 5.29
