Question

Hey please answer fast in copy please ​

Answer 1

Answer:

4. a²+ab-7b²

5. 3x²+2x-11

Step-by-step explanation:

5. subtract the area of triangle from the area of rectangle to obtain the answer

i.e. [area of rectangle] - [area of triangle]

⇒ [4x²-2x-6] - [x²-4x+5]

⇒ 4x²-2x-6 -x²+4x-5

⇒3x²+2x-11.

∴ area of shaded region = 3x²+2x-11

4. subtract  -a²-ab+7b² from 0 to obtain the answer

i.e. [0] - [-a²-ab+7b²]

⇒0+a²+ab-7b²

⇒a²+ab-7b².

∴ the difference between 0 and -a²-ab+7b² = a²+ab-7b²

Hope this helps COMRADE :)