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
VER TODAS LAS RESPUESTAS ( 21+ )
Otras preguntas
Darren cut a lemon pie into 8 equal slices. His friends ate some of the pie and now 5/8 is left . Darren wants to pur each slice of the leftover pie on its own
best known early roman dictator of the republic was
)Which explanation provides the best evidence to support the interpretation that Caesar's pride led to his downfall? Caesar sleeps peacefully through the night
Which of the following represents 645? A. 6 hundreds + 5 ones B. 3 hundreds + 34 tens + 5 ones C. 5 hundreds + 4 tens + 5 ones D. 6 hundreds + 2 tens + 15 ones
What number is the same as 7 tens and 20 ones
Jim got 2 out of 5 questions correct on him test. Which is equivalent to 2/5
Which of the following organisms exhibits radial symmetry? Flatworm Butterfly Tadpole Starfish
Identify three challenges bricks construction may encounter when trying to implement their corporate social investment plan inbthe local community
Which athletes mentioned in the article have complete in the Olympics in the past?
2. Many factors led to the end of communism in the Soviet Union and Eastern Europe, and subsequently the end of the Cold War. Choose one person, topic, or event
