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A certain rectangle has length 2x + 1 and width x + 1, find an expression for its area. You
answer should be in the form of a quadratic expression. Why do you think it's called this?


Sagot :

Answer:

2x² + 12x + 10

Step-by-step explanation:

Area of a rectangle = width x length

Therefore,

Area = (x + 1)(2x + 10)

Expand the brackets:    2x² + 10x + 2x + 10

Combine like terms:      2x² + 12x + 10

A quadratic expression is an expression with the variable with the highest power of 2