Question

Solve the following equation using any method of your choosing: 2x² +1 = 19

Answer 1

Answer:

X=3

Step-by-step explanation:

2$x^{2}$+1=19

2$x^{2}$=18   < subtract both sides by 1

$x^{2}$=9    < divide both sides by 2

x=$\sqrt{9}$  < square root both sides

x= 3

You subtract the 1 and divide by 2 to isolate the variable.

Answer 2

Answer:

x = 3

Step-by-step explanation:

2x² + 1 = 19

Eliminate the 1 by subtracting to both sides.

2x² = 18

Eliminate 2 by dividing both sides by 2.

x² = 9

Square root 9.

$\sqrt{9}$ = 3

x = 3

Hope this helps :D