Answer:
x ≈ - 5.32, x ≈ 1.32
Step-by-step explanation:
Given
x² + 4x - 7 = 0 ( add 7 to both sides )
x² + 4x = 7
To complete the square
add ( half the coefficient of the x- term )² to both sides
x² + 2(2)x + 4 = 7 + 4
(x + 2)² = 11 ( take the square root of both sides )
x + 2 = ± 
( subtract 2 from both sides )
x = - 2 ±
Thus
x = - 2 - ≈ - 5.32 ( to 2 dec. places )
x = - 2 + ≈ 1.32 ( to 2 dec. places )
Answer: it's either kg-5/8 or kg + -5/8
Step-by-step explanation:
Answer:
A full circle is 360 degrees so 2/3 is 120
Step-by-step explanation:
Put it al in a calculater here is a calculater website web2.0calc and tell me what you get and I ill tell you if you are right
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Answer:
-7
Step-by-step explanation:
4-11=-7
