Factorise: 567x4–112y4
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Step-by-step explanation:
Melting a sugar cube is a physical change because the substance is still sugar. Burning a sugar cube is a chemical change. Fire activates a chemical reaction between sugar and oxygen. The oxygen in the air reacts with the sugar and the chemical bonds are broken.
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Answer:
- Sum of interior angles of pentagon ABCDE = (n-2)×180° = (5 - 2)x180° = 540°.: sum of all angles of a pentagon is
5400
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