a - b is 9
Step-by-step explanation:
- Step 1: Given a² + b² = 1305, a × b = 648. Find a - b using the identity for (a - b)²
⇒ (a - b)² = a² + b² - 2ab
⇒ (a - b)² = 1305 - 2 × 648 = 1305 - 1296 = 9
⇒ (a - b) = 9
75
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Hope this helps you
The composite figure is made up of 2 rectangles.
Area of the top rectangle = 9 x 10 = 90 m²
Area of the bottom rectangle = 30 x 9 = 270 m²
Area of the figure = 90 + 270 = 360m²
Answer: Area = 360m²
A.
If you solve it all out you get f(x)= -4x^2 -56x-202
