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24.06.2019 •
Mathematics
What is the value of this quadratic function. 4x^2+88x
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Ответ:
x = 0 or x = -22
Step-by-step explanation by completing the square:
Solve for x:
4 x^2 + 88 x = 0
Divide both sides by 4:
x^2 + 22 x = 0
Add 121 to both sides:
x^2 + 22 x + 121 = 121
Write the left hand side as a square:
(x + 11)^2 = 121
Take the square root of both sides:
x + 11 = 11 or x + 11 = -11
Subtract 11 from both sides:
x = 0 or x + 11 = -11
Subtract 11 from both sides:
x = 0 or x = -22
Ответ:
Explanation:
0.82 is greater than a half because one half of 1 is 0.50