Answer: x=-3, x=-2/7
Explanation:
think of factors of 6 that multiply to 6 and (when multiplied by 7) add up to 23. the only factors that work are 2 and 3.
factored: (7x+2)(x+3) = 0
when expanding: 7x^2+2x+21x+6 -> 7x^2+23x+6 WORKS
next: make each parentheses equation equal to 0
7x+2 = 0
7x=-2
x=-2/7 ANSWER
x+3=0
x=-3 ANSWER