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sweet [91]
3 years ago
5

How do i complete the square y= X2+8X-4

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
4 0
For x²+bx+c, to complete the square, you add (half of b)²
b=8 in this case, so you add 4², which is 16
x²+8x+16-16-4
y=(x+4)²-20 is the final form.
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3 0
2 years ago
The diagram shows a right-angled triangle.
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Find the area of a circle with the radius of 3. (use 3.14 for pi)
taurus [48]
------------------------------------------------------
Formula
------------------------------------------------------
Area of circle = πr²

------------------------------------------------------
Find Area of circle
------------------------------------------------------
Area of circle = 3.15 x 3²
Area of circle = 28.26 unit²

------------------------------------------------------
Answer: Area = 28.16 unit²
------------------------------------------------------
7 0
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