Question

solve the equation by completing the square. Round to the nearest hundredth if necessary.

x2 + 7x = –12 (1 point)
3, –4
–3, –4
3, 4
–3, 4

Answer 1

x^2 + 7x = –12

Answer 2

well you know the two x are 3 and 4. since both 7 and 12 have + , you know that 3 and 4 are also positive

Answer 3

x=4; -3

Answer 4

\[x ^{2}+4x+3x+12\]
x(x+4)+3(x+4)
x+4=0; x+3=0
x=-4; -3