solving by formula

Question

So the formula i was given was this:

 

x= -b± root b^2 -4ac   /2a

 

for the equation ax^2+bx+c=0

 

and idk how to plug this into it

 

2x^2 +1 = 7x

 

Answer 1

Write the equation in standard form, then it will be clear.

 

2x² + 1 = 7x

 

Standard form:

 

2x² - 7x + 1 = 0

 

a = 2

b = -7

c = 1

 

x= [1/(2a)] [-b ± √(b² - 4ac)]

 

Now try to finish from here.