1+2(x+3)=7
how do you solve

1

Step-by-step explanation:

you have to minus the 7 by 6 which you get from adding all the other numbers up together

The first thing we will do is rewrite the function.
 We have then:
 f (x) = - 20x ^ 2 + 23x-6
 We now look for the zeros of the function:
 -20x ^ 2 + 23x-6 = 0
 - (4x-3) (5x-2) = 0
 
 The factorization that can be used to find the zeros of the function is:
 - (4x-3) (5x-2) = 0