2(x^2-7)+8=40 just answer pls

x = +- sqrt 23

Step-by-step explanation:

positive and negative square root of 23.

x=√ 23 and x=-√ 23

Step-by-step explanation:

2(x^2-7)+8=40

2x^2-6=40

2x^2=46

x^2=23

x=√ 23

x=-√23

its c or d   take a lucky guess my dude