Need help!! What are the roots of the polynomial equation?

x2−x−72=0

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x1=

x2=

After applying the composition r0.90 ry to rs what are the coordinates of r' and s'? a. r'(–3, 1),  s'(–3, 5)b. r'(–1, 3),  s'(–5, 3)c. r'(1, 3),  s'(5, 3)d. r'(5, 3),  s'(1, 3)

With finding limits of multi variable !

The measures of the legs of a right triangle are 15m and 20m . what is the length of the hypotenuse