Functions (1 Viewer)

[yupmynameisnick]

Can anybody please tell me how to find the values of b if,

f(x)=3x^2-7x+1

and f(b)=7

Its in Chapter 5 challenge in maths in focus

Any help would be awesome

 

[Smile12345]

The Preliminary Book??

 

[Menomaths]

3b^2-7b+1 = 7
3b^2-7b-6 = 0
b = -2/3 or b = 3

 

[HeroicPandas]

3b^2-7b+1 = 7
3b^2-7b-6 = 0
b = -2/3 or b = 3

.

 

[Menomaths]

Why'd you highlight my b's for!?

 

[HeroicPandas]

Why'd you highlight my b's for!?

LOL!

To show u

 

[levaly]

Here is a step by step solution for 3x^2-7x+1=7
http://www.symbolab.com/solutions/quadratic_equations?query=3x^{2}-7x+1=7