alexavasiliou
27.06.2019 •
Mathematics
Asquare painting has an area of 81x^2-90x-25. a second square painting has an area of 25x^2+30x+9. what is an expression that represent the difference of the area of the paintings? show two ways to find the solution
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Ответ:
The answer in the procedure
Step-by-step explanation:
Let
A1 ------> the area of the first square painting
A2 ----> the area of the second square painting
D -----> the difference of the areas
we have
case 1) The area of the second square painting is greater than the area of the first square painting
The difference of the area of the paintings is equal to subtract the area of the first square painting from the area of the second square painting
D=A2-A1
case 2) The area of the first square painting is greater than the area of the second square painting
The difference of the area of the paintings is equal to subtract the area of the second square painting from the area of the first square painting
D=A1-A2
Ответ:
answer: 73.74
step-by-step explanation: