Question

Answer A2 with explaination​

Answer 1

The area of the the shaded region would be : (area of outer rectangle)-(area of inner square)

since the areas are already given, we just have to substitute.

(5x²+12x+10)-(x²+2)

by removing the brackets, the signs change for the x²+2

5x²+12x+10-x²-2

by grouping the like terms

5x²-x²+12x-2x+10

4x²+10x+10 is the area of the shaded portion.

hope it helps

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