(5x^3 + 3x^2 + 5x) + (7x^3 -3x^2 +8x) = (12x^3 + 13x)
(3x^3 + 5x^2 + 4x) + (9x^3 - 5x^2 + 9x) = (12x^3 + 13x)
Answer:
Explanation:
The figure is a right triangle with:
- hypotenuse = segment AC
- vertical leg = 7 units
- horizontal leg = 4 units
Hence, you must use Pythagora's theorem, which is valid for all right triangles:
Substituting the data:
Square root both sides:
Answer:
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Step-by-step explanation:
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