![steven2996](/avatars/35748.jpg)
steven2996
05.03.2021 •
Mathematics
3. а) Составь задачу по кратко
- 5 шт.
- 2 шт., в 2 раза больше
б) Наме вопрос так, чтобы за
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Ответ:
9 inches by 9 inches
Step-by-step explanation:
(x+2)² = 121
We have to solve for x as,
x² +4x + 4 = 121
x² + 4x = 121 - 4
x² + 4x = 117
x²+ 4x - 117 = 0
Sum = coeffient of x = 4
Product = constant = -117
Now we have to find 2 numbers which satisfies the above 2 conditions are 13 and -9.
13 - 9 = 4
13 × -9 = -117
x² + 13x - 9x -117 = 0
Taking common factors as,
x(x+13) -9(x+13) = 0
(x-9)(x+13) = 0
x-9 = 0 or x + 13 = 0
x = 9 or x = -13
The side measure cannot be negative(-13), so x = 9 is the solution.
So the dimension of the cropped photo is 9 inches by 9 inches.