456,171 views
5 votes
5 votes
Select the correct answer.

Solve for x.

x2 + 4x - 21 = 0
A.
-3, -7
B.
-3, 7
C.
3, -7
D.
3, 7

User Pointer
by
2.8k points

1 Answer

12 votes
12 votes
i bet the equation is x²+4x-21=0
factorise
(x+7)(x-3)=0
x+7=0 , x-3=0
x=-7, x=3
the answer is C
User Paolo Dragone
by
3.0k points