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The function f(x) = 2x2 + 3x + 5, when evaluated, gives a value of 19. What is the function’s input value?
1 answer:
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The value of x is 28 millimeters in the composite figure of two right-angled triangles lying next to each other
<h3>What is a composite figure?</h3>A composite figure is a figure that is produced from the combination of two geometric shapes together.
The diagrammatic expression of a composite figure consists of two right-angled triangles lying next to each other can be seen in the image attached below.
For the left-side right-angled triangle, we have:
13² = h² + 5²
h² = 13² - 5²
h = √(169-25)
h = 12
Recall from the diagram that:
h² = pq
- If p = 5 and q = x
∴
12² = 5x
x = 144/5
x ≅ 28 millimeters
Learn more about composite figures here:
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