The interior angles of a triangle have a ratio of 2: 3: 5 2 : 3 : 5 . what is the measure of the largest interior angle of the triangle

Ratio = 2 : 3 : 5

Hence, the interior angles of the triangles are 2x, 3x and 5x.

We know, the sum of the interior angles of  are triangle is 180°.

2x + 3x + 5x = 180

10x = 180

x = 18

Hence, the angles are 36°, 54°, 90°.

Hence, the measure of the largest interior angle is 90°.

1.
2x (4x² -3x +8) - (3x+4)
8x³ - 6x² +16x -3x -4
8x³ -6x² +13x -4

2.
3x(2x²-7)+7x(x²+4)
6x³ -21x +7x³ +28x
13x³ +7x

3.
2x² (-4x^4 -12x² - x +17)
-8x^6 - 24x^4 - 2x³ + 34x²