Please help me only answer number 17 !!

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The sixth grade art students are making a mosaic using tiles in the shape of right triangles.each tile has leg measures of 3 centimeters and 5 centimeters.i f there are 200 tiles in the mosaic what is the area of the mosaic.

The sum of the squares of two numbers is 8 . the product of the two numbers is 4. find the numbers.

Factor the gcf out of the polynomial 9x^6+6x^4+15x^3