Question

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

Answer 1

No because 2(6) is 12 and that squared is 144

Answer 2

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