ashtank33
ashtank33
15-06-2020
Mathematics
contestada
Solve x2+4x-7=0 by completing the square
Respuesta :
mhanifa
mhanifa
15-06-2020
Answer:
-2- √11
-2+√11
Step-by-step explanation:
x²+4x-7=0
x²+4x+4- 11=0
(x+2)²-11=0
(x+2+√11)(x+2-√11)=0
x+2+√11=0 ⇒
x= -2- √11
x+2 -√11=0 ⇒
x= -2+√11
Answer Link
Ogulab21
Ogulab21
15-06-2020
(X+2)^2 - 2 - 7
(X+2+3) (x+2-3)
Answer Link
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