Question

Helppppppppppppppppppppppppppppppppppppppppppppppppppppppp

Answer 1

The answer is 4, just plug it in

Answer 2

7x + 1 = 2x^2 - 3
2x^2 - 7x - 4 = 0
(2x + 1)(x - 4) = 0
2x + 1 = 0; x = -1/2
x - 4 =0; x = 4

answer
B. 4 (second one)