Answer:
105 psychology textbooks. 189 physics textbooks.
4x^2+9x-(x^2-6x+9)+11
4x^2+9x-x^2+6x-9+11
3x^2+15x+2
Answer
Step-by-step explanation:
To find the area of a shape multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.
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Pythagoras theorm state is-
the square of the hypotenuse side is equal to the sum of squares of the other two sides