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No, (5h + 2h^2) is not equivalent to (7h). The expression (5h + 2h^2) contains a term (2h^2), which is a quadratic term, while (7h) is a linear term. Therefore, they represent different mathematical expressions.
53 x h3
8w x 5h = 40wh
The simplified expression of 10h+6-5h+3 is 5h+9
5h + 6 = 25 Subtract 6 from both sides: 5h = 19 Divide both sides by 5: h = 3.8 h = 3.8