Is 6 a solution to the quotation 2x squared + 8 equals 80

Step-by-step explanation:

2x²+8=80

2x²=80-8=72

x²=72/2=36

x=±√36

x=±6

so x=6 is one solution other is x=-6

+25 = x

step-by-step explanation:

here x is the hypotenuse of a right triangle whose legs are 7 and 24.   by the pythagorean theorem, 7² + 24² must equal x²:

x² = 49 + 576 = 625.   thus, x = +√625 = +25 = x