Answer: 48
Step-by-step explanation:
2x - 1 = 6
Add 1 to both sides of the equation , we have:
2x = 7
divide through by 2
x = 7/2
The value of [tex]4x^{2}[/tex] - 1 will be calculated by substituting in the value of x , that is
[tex]4x^{2}[/tex] - 1 = 4([tex](\frac{7}{2} )^{2}[/tex] - 1
= 4([tex]\frac{49}{4}[/tex]) - 1
= 49 - 1
= 48
